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Update Log

Last Update: 03/18/23
2023
03/18/23 
An essay, entitled "Energy Budgets, Peak Global Temperatures, and Their Implications" has been posted as Essay #35. It discusses the concept of an Energy Budget, the total future amount of carbon dioxide we are limited to if we are not to exceed specified peak global temperatures and experience the serious adverse consequences such temperatures will bring. At the same time it is ill-advised to say that if such a budget is not met then we are "doomed" as such a statement breeds hopelessness and despair. Every pound of emission we can avoid lessens the damage we experience. To read it, scroll down to Essays in the left hand column of the Home page. Then, under Essay #35 click on the blue highlight reading Energy_budgets.pdf
​
01/20/2023 
Links to two short videos with a humorous touch ​have been placed in Video . The two are by climate scientist Adam Levy and are part of a series he calls "Climate Adam." The first explains why it is virtually certain that 2023 will be among the hottest years ever recorded since instrumental record keeping began. The 2nd deals with the prospects for floating offshore turbines as a renewable energy resource,  a topic of special interest here on the California Central coast with the leasing of areas of the Morro Bay offshore wind area.

03/01/2023
My review of a highly recommended book, "The Climate Book" by the young Swedish woman 
Greta Thunberg has been placed in the Resources/Books section of this website. To read it go to Books ; scroll down to the Thunberg book.

2022

12/23/22 A link and brief summary about an opinion piece by Los Angeles Times contributor Tony Barboza has been placed in For Teachers & Students. It describes how Mr. Barboza has talked to his Kindergarten and 2nd grade daughters about climate change. I have added a few comments of my own about talking with older children.

07/13/22 A new essay "Lithium-ion batteries: Can we meet the demand sustainably?" has been posted. It discusses whether there is enough lithium and cobalt--two critical materials in lithium-ion batteries--to meet the expected surge in worldwide demand as electric vehicles replace internal combustion engines. It is also discusses the societal and environmental impact of extracting these two minerals. To read it, click on Essays. It is Essay #34.
​
05/05/22 
A new essay, "Waste Heat," is intended to illustrate how simple physical ideas and arithmetic can discriminate between factors which are important and those which are not. It also is intended to show how "big numbers" are not obstacles to carrying out simple arithmetic. The application is to the warm water ("waste heat") deposited into the cooler ocean by power plants. It also estimates the amount of 'avoided' carbon dioxide emissions from nuclear power plants.  To read it, click on  Essays. It is Essay #33.
​
03/26/22 
A new essay, "Solar energy and the duck curve: If it looks like a duck and quacks like a duck it must mean...what?", examines the limitations which are imposed on adding increasing amounts of wind, and especially solar, energy. 
To read it, click on Essays.    It is Essay #32

01/16/22 A new essay,  "Justified Anger at Climate Change Inaction: A Movie, an Editorial and three Books", recommends a Movie, an excellent Editorial, and three books, expressing in various degrees the anger and frustration at the failure of our leaders to adequately deal with the ongoing climate crisis. While humor and satire are effective in mobilizing public support for action, research shows that public anger is also. I conclude with some comments, suggestions, and one hopeful note. To read it click on Essays. It is essay #31.


2021

12/02/21 
A new essay " Desert Tortoises, Birds, Nuclear Waste and Climate Change: Difficult Tradeoffs" 
addresses the tension between the urgent need to reduce greenhouse gas emissions and some legitimate environmental issues involved. Because of the length of this essay I have provided a table of contents so readers can scroll to items of interest. To read it click on Essays. It is essay #30.

10/20/21_1 and 10/20/21_2  Resources for Teachers and Students: Two new resources for teachers and students have been posted. One,10/20/21_2,  is written by me explaining the physical concepts and the math used for calculating the passage of radiation through the earth's atmosphere and thus the greenhouse effect. It is mainly intended for college teachers and their students in physics, earth sciences or applied math. But it may also be suitable for advanced high school students and for readers with some acquaintance with basic calculus and hopefully for the general reader as well. The other resource, 10/20/21_1, is a very readable and authoritative article on the greenhouse effect and the role of infrared radiation in controlling the temperature of the Earth, as well as Venus and Mars. It is written by one of the world's experts on the topic, Dr. Raymond Pierrehumbert, and was originally published in the April 2011 issue of Physics Today. To access either one of these resources click on For Teachers & Students where you will find these two resources. 

10/15/21 Resources for Teachers and Students:
 A resource for parents and teachers of primary grade children: Activities for Environmentally Friendly Living:
Reader  Mykael Ray kindly sent the following resource for involving chlldren and their parents or teachers in sustainable and environmentally friendly practices. While it is written for parents of children, it can equally well be used by teachers as part of hands-on school activities. To access it, click on For Teachers & Students 
where you will see a brief description and the link to this resource.

 09/09/21 Guest Scientists  My good friend and distinguished climate scientist, Dr. Ben Santer, has written an excellent account of how climate scientists have been able to identify the contribution of human activities (due to fossil fuel consumption) to the changing climate, examples of which Ben brilliantly documents and which have been all too evident recently.  To read it, click the Guest Scientists blue button above. Then, in the Guest Scientists page,  click on the title of his opinion piece
 "How do climate scientists study the causes of climate change?" where it is highlighted in blue
08/22/21 Essays Essay #29 This essay, "Reducing greenhouse gas emissions: 'But What About China?'", addresses a frequent comment concerning what U.S. policy should be, in view of the fact that China is currently by far the world's largest emitter of carbon dioxide.

Video  05/28/21 A video of a presentation on Solar Geo-engineering. This video is a discussion by Dr. Marcia McNutt, president of the National Academy of Sciences, and a geophysicist and Dr. Christopher Field, Director of the Stanford Woods Institute for the Environment. Dr. Field has carried out many years of research on the human and ecological impact of climate change.

The topic of solar geo-engineering is a very controversial and complex one, but one which we will have to address.
I believe the two participants and the moderator provide a thoughtful discussion of this topic. The video runs about 57 minutes and may be seen here: www.nationalacademies.org/event/05-20-2021/climate-conversations-solar-geoengineering
Then scroll down to the video screen.

05/06/21 Essays: Essay #28 This essay (A "Grand Solar Minimum" would not cause a new Little Ice Age") discusses the suggestion that a prolonged period of cooling could be caused by prolonged solar dimming associated with a long period without sunspots.


2020

​

05/31/20 The presentation described just below was taped. It is described and can be found by going to the resources/video page here: Video

05/31/20 See  Alerts & Event notices concerning an online (ZOOM)  presentation on June 4th at 11:00 AM  to be given jointly by Dr. Weymann and Dr. Timothy LaSalle, Cal Poly Emeritus Professor of Agriculture. Please go to the Alerts and Event Notices page for a description and instructions for participation.

04/22/20 Essays: Essay #27  This essay discusses habits of thinking among liberals as well as conservatives which inhibit important dialogue among these two 'tribes'. An invitation is issued aimed at initiating such dialogue.  

03/21/20 Essays: Essay #26 This essay is part 2 of the series "Storing Electricity" and is a survey of the more important technologies for storing electricity.

02.20.20  Essays: Essay #25 This essay "Agriculture and the Green New Deal  concerns a very promising method for sequestering carbon by proper agricultural and soil management techniques. There are also numerous other advantages to practicing what is called "BEAM": biologically enhanced agricultural management.

02.11.20 Essays:  Essay #24 This is the first in a series on ‘Storing electricity’. This first part describes the importance of being able to store electricity to avoid the ‘overgeneration’ of solar energy and minimizing the need for expensive gas-fired generators that sit idle much of the time. It illustrates these concepts using what has come to be known as the ‘duck curve’.

2019
11.16.19 Essays  Essay #23 This is the 2nd part of a post about Oceanographer Josh Willis, describing how he uses humor to teach about climate science

11.06.19 Essays  Essay #22  OMG: The "Oceans Melting Greenland" project - part 1 of 2 about JPL Oceanographer Dr. Josh Willis

10.08.19 Essays: An essay describing the attacks on climate scientists including the deeply personal story by climate scientist Dr. Benjamin Santer

09.21.19 ​Resources-> For Teachers and Students
A link to a guide for college students on how to live sustainably while on campus

09.20.19  Essays: Guest Essay by Mr. George Williams - Two Sources of Critical Energy and Climate Information

03.13.19 R
esources—> reports, booklets and white papers​
A short ‘primer’ on climate science and climate risks written by an expert and intended for the non-specialist. 

02.21.2019 Essays: Why do climate deniers deny?  This is an extended version of my commentary that is scheduled to appear in the February 22nd version of the Atascadero News.  It is in response to a February 1st column by a climate denier appearing in the same paper with the title “A pretense to save the planet.”

02.08.2019 Essays: Dealing with Climate Change: A moral imperative A power point slide presentation and the associated text only PDF for a presentation given at the Unitarian-Universalist Church in Cambria, CA.

2018
07.24.18  Home A 13 minute video by Dr. Karherine Hayhoe  is now featured here .  The Neil deGrasse Tyson video has been moved to the Resources/Video Page.  Resources/For Teachers and Students has been updated to provide a link to information on greenhouse gas emissions standards in the US, discovered by a student while working on a student project.

07.13.18 Alerts and Event Notices  A summary of my guest appearance on a radio show, along with topics that came up, some that didn't, and numerous links to various items.

06.09.18 Essays : Weather Safety and Preparedness  With many hazardous weather events increasing as the planet warms, this essay focuses less on climate science itself but more on the steps to take before and during many types of hazardous weather events to insure the safety of yourself and your family and pets.

01.05.19  Essays San Jose Mercury-News published an Editorial on which I was a co-author. The text is reproduced in the Essays section of this website.

2017

12.06.17
  Resources/For Teachers and Students - new information added

​10.15.17 Resources/Videos, added a report by NBC Chief Foreign Correspondent Richard Engle which documents the extraordinary and ambitious path towards  renewable energy and electric cars that China and India. have embarked on. 

09.12.17 Resources/Videos, added the 4th series  "Earth, Fire, Winds of Change, Being Stewards of God's Creation" 
A talk by Dr. Lou Pitelka on the Ecological Impacts of Climate Change.

09.02.17 Resources/Videos, added the 3rd in the series  "Earth, Fire, Winds of Change, Being Stewards of God's Creation"
This a talk by Dr. Stephen Hansen, MD on the Health Impacts of Climate Change. 

08.28.17  Resources/Videos, added 1 video "Earth, Fire, Winds of Change, Being Stewards of God's Creation"  a talk given by Dr. Sharon Rippner, head of the local chapter of the Citizens Climate Lobby which advocates for a revenue-neutral carbon fee, 
and bipartisan Congressional action on climate change. Her talk also presents practical steps for citizen involvement in this issue.  

07.05.17  Resources/Videos, added 2 videos “Human Caused Climate Change: Basic Science and some Paths Forward” from a talk given by Ray Weymann on June 4th, 2017, and "What is going on with our climate and weather?"  San Luis Obispo and PG&E meteorologist John Lindsey
 
04.24.17 Resources/Videos, added a short video by Neil deGrasse Tyson, Science in America

03.24.17 Tutorial Revisions, topic 5

02.22.17 Resources/Reports, Booklets, Whitepapers Added an Editorial by Rush Holt

02.06.17 Essays Added Essay #15 How to Inoculate against "Alternative Facts”  With the recent deployment of the rather curious phrase "alternative facts”, it is timely to ask how one should communicate with climate change skeptics who reject some actual facts about climate change.

01.24.17 Essays  Added Essay #14 "But aren't they in it just for the money?" has been posted in response to the
myth that the overwhelming consensus among scientists concerning human-driven climate
change simply reflects their desire to get rich on grant funds!​

01.23.17 Resources/Video   Climate Scientist Katharine Hayhoe has produced more of her “Global Weirding” videos.
There is one in particular I would urge readers to watch. For comments and the link go
to the Resources/Video page.

2016

12.26.16 Essays  Added Essay #13 The Scientific Consensus on Climate Change: How is it measured and what does it mean?

12,13,16 Essays  Added Essay #12  Trump: An Open Mind or An Attack on Science?

11.22.16 Essays  Added Essay #11 Statement of Purpose
A guest Essay by Climate Scientist Dr. Benjamin Santer

11.14.16 Resources/Video A series of four short, entertaining videos by climate scientist and communicator par excellence
 Katharine Hayhoe 

11.09.16 Tutorial Revisions, topic 4

11.01.16 Essays Added  Essay #10 Climate Change: Kids Get It

11.01.16 Resources/Video Added "Extreme Weather Events on a Warming Earth"

11.01.16 Resources/Video Moved "We Are All Sitting Ducks" here from the Home page

10.24.16 Tutorial Revisions, topics 1 - 3

​10.24.16 Essays Added Essay #9 An Open letter regarding Paris agreement

10.24.16  The set of tutorial topics is being revised. Click on the Tutorial button on the left side of this page.

2015

10.09.15  Posted the new Climate Science Summary page

10.02.15  Essays  Added Essay # 8 Why Should California Bother?

08.23.15  Essays  Added Essay # 7 Tour of California Independent System Operator 

06.04.15  Added Climate Science Summary page

06.04.15  Added Alerts & Event Notices page

06.04.15  Added Local Climate Science Classes page to Resources

06.04.15  Separated Tutorial and Essays into two separate pages


04.19.15  Alerts & Events  KCBX Radio "Central Coast Voices"
Radio program Thursday, April 23, 2015, from 1 to 2 PM, Ray Weymann, Jim Cole and George Williams discuss climate change. The recorded radio program will also be available on the KCBX Cental Coast Voices website 48 hours later.


04.04.15  Resources / Video  Added Chasing Ice - Global Warming At Work 
While words can attempt to convey the reality of rapid climate change, images can often convey this reality much more powerfully. A recent example is a portion of a TED talk presented by Chasing Ice movie glacier photographer James Balog of Extreme Ice Survey. I urge readers to view this 13-minute video clip.

03.13.15  Misperceptions  Added No. 6 
A common fallacious argument is that Norse settlements in Greenland about 1000 years ago show that present global warming is just due to natural causes. The archeological and physical scientific evidence is discussed in detail to explain why this argument is, in fact, fallacious.
2014

09.19.14  Essays  Added Climate Change Revisited 
Cal Coast News asked for an opinion from me on "Climate Change Revisited".  I am posting that essay here for two reasons:
     1) their reformatting of my submission made it difficult to distinguish direct quotes from my comments,
           the references at the end were not "live" links, and the last five references were omitted
     2) I will respond on this website in a few days to some of the comments following my Cal Coast News
           post in more detail than is appropriate in the Cal Coast News comments section.

09.11.14  Essays  Added Living Sustainably 
Peter Schwartz, Cal Poly Physics Professor, and Steve Weymann (son of Ray Weymann), offer their views of living sustainably.

09.06.14  Essays  Added Pow! Oouff! Take That, Strawman! 
Dr. Weymann's response to an opinion article in the August 20, 2014, edition of Atascadero News, critiquing the use of straw man arguments and use of lack of evidence and references in assertions of facts.

05.07.14  Misperceptions  Added No. 5 
40 years ago all climate scientists predicted a coming ice age.

03.22.14  Resources / Reports, Booklets and Whitepapers  Added AAAS report What We Know

03.21.14  Resources / Video  Added "Dealing with Climate Change"
Presentation videos from Ray's Lifelong Learners of the Central Coast series of four classes in March 2014.

03.21.14  Alerts & Events  Added Panel Discussion on Our Changing Climate
April 22nd event at the Atascadero Community Church.

02.28.14  Expert Summaries  Added the new report Climate Change: Evidence and Causes.

02.21.14  Alerts & Events  Added notification of a free 8-week on-line course by the University of Chicago starting March 31st, "Global Warming: The Science of Climate Change".

01.24.14  Alerts & Events  Added notification of local public 4-week course "Dealing With Climate Change" during March 2014.
2013

12.31.13  Misperceptions  Added No. 4 - Volcanoes produce more CO2 than human activities.

11.27.13  Resources / For Teachers and Students  Added Climate Change Task Force links

09.12.13  Alerts & Events  Public presentation by Dr. Weymann at the SLO County Sheriff's Office (Auditorium) on Wednesday, September 25th, 7 PM.

08.04.13  Alerts & Events  Climate Change panel discussion at SLO Botanical Garden on Saturday, August 10th, 1-3 PM.  Public event.  See SLO Botanical Garden Event Notice.

04.18.13  Alerts & Events  Watch "Chasing Ice" on National Geographic Channel on April 19th, 20th and 26th.

04.15.13  Alerts & Events  Dr. Weymann presentation during Earth Day Celebration at Santa Maria's Natural History Museum, April 20th, 11:30 AM.  (also see the next posting)

04.15.13  Alerts & Events  New movie "Thin Ice: The Inside Story of Climate Science" will be released for Earth Day 2013 and available for free on-line viewing on April 22nd

03.07.13  Essays  Added Numbers Count and a Challenge for Teachers

03.02.13  Resources  Ray's Class & Presentation Slides & Other Materials  Added slides from his Lifelong Learners climate classes, final February 23rd class

02.21.13  Resources / Video  Added:
  1. Center for Remote Sensing of Ice Sheets
  2. PETM - Unearthing Ancient Climate Change

02.20.13  Resources / Local Climate Science Classes  Ray's Class & Presentation Slides & Other Materials  Added slides from his Lifelong Learners climate classes:  February 2, 9, 16  (23 coming)

02.18.13  Resources / Reports, Booklets and Whitepapers  Added links to two reports:
  1. Our Changing Climate 2012: Vulnerability & Adaptation to the Increasing Risks from Climate Change in California
  2. Warming World: Impacts by Degree

01.28.13  Resources  Added 2012 National Academy of Sciences information:
  Booklet - Climate Change: Evidence, Impacts and Choices
  Videos - Climate Change: Lines of Evidence

01.14.13  Alerts & Events  Dr. Weymann appearing on the Dave Congalton KVEC 920 AM radio talk show on January 17th at 4:30 PM.

01.10.13  Tutorial  Added Lesson # 10 - Ocean Acidification: A Consequence of a Higher CO2 World

12.29.12  Resources / Video  Added Yale Forum on Climate Change & the Media, which provides a series of videos and other information about climate change and communication.

12.29.12  Tutorial  Added Lesson # 9 - Consequences of a Warming World Part 1: Physical Signs of a Warming World

12.19.12  Tutorial  Updated Lesson # 8 - Climate Sensitivity

12.16.12  Tutorial  Updated Lesson # 7 - Looking Forward By Looking Backward

12.14.12  Tutorial  Updated Lesson's:
  # 4 - Weather, Climate and "Computability"
  # 5 - Is The Earth Currently in Energy Balance?
  # 6 - The Carbon Cycle

12.10.12  Essays  Added "Communicating Climate Science and Story Telling: Five Examples"
Dr. Weymann addresses a study of attitudes towards climate change and various approaches to climate science communication with five examples illustrating these approaches.

12.08.12  Tutorial  Updated Lesson's:
  # 1 - Energy Balance: A Fundamental Law of Nature
  # 2 - "Forcings" and "Feedbacks"
  # 3 - The Greenhouse Effect

11.29.12  Alerts & Events  Dr. Weymann's 4-part series of climate change classes:
  Class:  Climate Change: Science, Impacts, Challenges & Solutions
  Dates:  February 2nd, 9th, 16th & 23rd
  Presentation Period:  1:30 PM - 3:00 PM
  Informal Discussion Period: 3:00 PM - 3:30 PM
  Location: PG&E's Energy Education Center, 6588 Ontario Road, San Luis Obispo (the frontage
    road between the two Hwy 101 Avila Beach freeway exits).
  Registration is Required:  Go HERE to register
  Course Fee:  Non-Members $40, LLCC Members $20
  In Association with Lifelong Learners of the Central Coast

11.02.12  Resources / For Teachers and Students  Updated to add links to websites designed for use by children and students

10.19.12  Added section Expert Summaries

02.27.12  Resources / Books  Added Book Review "The Hockey Stick and the Climate Wars" by Michael Mann

02.27.12  Resources / Books  Added "The Hockey Stick and the Climate Wars" by Michael Mann

02.27.12  Resources / Books  Added "Merchants of Doubt: How a Handful of Scientists Obscured the Truth on Issues from Tobacco Smoke to Global Warming" by Erik M. Conway and Naomi Oreskes

02.25.12  Guest Scientists  Added "Science and Climate Change" by Dr. Robert Williams

02.25.12  Alerts & Events  Public presentation by Dr. Ray Weymann, April 11, 2012
  Human-Induced Climate Change: Scientific Fact or Political Myth?
  6:30 PM, Spanos Theatre, Cal Poly Campus

01.20.12  Alerts & Events  Discovery Channel series "Frozen Planet" beginning March 18, 2012

01.19.12  News  NASA Finds 2011 Ninth Warmest Year on Record

01.05.12  Resources / Video  Added Dr. Ray Weymann video "Climate Change Basics"

07.02.11  Tutorial  Added Lesson # 8 - Climate Sensitivity

07.02.11  Resources / Favorite Sites  Added a link to Climate Science Rapid Response Team

07.01.11  Tutorial  Updated Lesson # 6 - The Carbon Cycle

04.18.11  Resources / Video  Added National Science Foundation's new "EARTH: The Operators' Manual"

03.05.11  Guest Scientists  Added "Impact of the Loss of the Glory Climate Science Satellite" by Dr. Bruce Wielicki

02.12.11  Alerts & Events  NASA Digital Learning Network webcast:
The Heat Is On: Global Warming - Causes and Consequences Thursday, April 21st.

02.09.11  Alerts & Events  Free public presentation:
The Most Common Myths About Climate Change by Dr. Ray Weymann in Atascadero, Thursday, March 17th.

01.23.11  Alerts & Events  Showing of "Climate Refugees" documentary on 1/30/11 at SLO Library

01.14.11  News  Different Records, Same Warming Trend

12.29.10  News  A Positive Outlook for Clouds

12.28.10  News  Secrets Beneath the Ice

12.28.10  Resources / Video  Added PBS NOVA on-line video Secrets Beneath the Ice.  

12.25.10  News  How Will We Know if 2010 Was the Warmest Year on Record?

12.10.10  News  2010 Meteorological Year Warmest Ever

12.09.10  Resources / Reports, Booklets and Whitepapers  Added booklet "The Scientific Guide to Global Warming Skepticism", strongly recommended for all readers.

11.03.10  News  Rivers Run Dry as Drought Hits Amazon

09.21.10  News  Climate scientist response to Lord Christopher Monckton's testimony before the U.S. Congress May 6, 2010

08.04.10  News  Posted a note about the delay in website updates, provided information about a new National Research Council report Climate Stabilization Targets: Emissions, Concentrations, and Impacts over Decades to Millennia posted on the Resources page, and a link to a new video presentation Detailed Response by Dr. John Abraham to a speech by Lord Christopher Monckton posted on the Resources page.

05.13.10  Resources / Favorite Sites  Skeptical Science

05.07.10  News  NAS member letter "Climate Change and the Integrity of Science"

04.28.10  Misperceptions  Added Misperception # 3

04.19.10  News  Fifth U.S. Climate Action Report (Draft)

04.01.10  Essays  Added Essay # 1

03.29.10  Misperceptions  Added Misperception's # 1 and # 2

03.25.10  News  NASA's Grace Satellites See Rapid Spread in Greenland Ice Loss

03.21.10  Resources / Video  Oceans of Climate Change

03.19.10  Resources / Favorite Sites  RealClimate

03.18.10  Resources / Reports, Booklets, Whitepapers  "Climate Change for Policymakers and Business Leaders."

03.17.10  Tutorial  Updated Lesson # 7 - Looking Forward By Looking Backward

03.17.10  Resources  Added material to the Booklets and Books sections

03.14.10  Tutorial and Essays  All lessons and essays now provided only as PDF files

03.14.10  Guest Scientists  Added this new page

03.14.10  Resources  Moved Favorite Sites page material to this page

03.14.10  Resources  Added this new page replacing the Legislation page and posted the first link to a National Academies booklet "Understanding and Responding to Climate Change - Highlights of National Academies reports - 2008".

03.14.10  Tutorial  Updated Lesson # 2 - "Forcings" and "Feedbacks"

03.12.10  Tutorial  Added Lesson # 7 - Looking Forward By Looking Backward and updated of the introductory statement

03.01.10  Tutorial  Added Lesson # 6 - The Carbon Cycle

02.26.10  Tutorial  Added Lesson # 5 - Is Earth Currently in Energy Balance?

02.18.10  News  Missing 'Ice Arches' Contributed to 2007 Arctic Ice Loss

02.17.10  Tutorial  Updated Lesson # 4 - Weather, Climate and "Computability"

02.16.10  News  NASA Finds Warmer Ocean Speeding Greenland Glacier Melt 

02.15.10  Tutorial  Updated Lesson # 2 - "Forcings" and "Feedbacks"

02.15.10  Tutorial  Updated Lesson # 1 - Energy Balance: A Fundamental Law of Nature

02.15.10  Tutorial  Added Lesson # 3 - The Greenhouse Effect

02.14.10  Tutorial  Updated Lesson # 2 - "Forcings" and "Feedbacks"

02.12.10  Q&A  Added first question

02.09.10  News and Resources / Favorite Sites  NOAA's new Climate Services website

02.03.10  News  Humans Are Warming Earth by Dr. Weymann

02.01.10  Resources / Favorite Sites  Added Climate Kids

01.27.10  Author  Added a photo of Dr. Weymann

01.22.10  Alerts & Events  Flyer for Dr. Weymann's February 10th presentation in Atascadero

01.20.10  Alerts & Events  Dr. Weymann's presentations on January 28th and February 10th

01.15.10  Tutorial  Added Lesson # 4 - Weather, Climate and "Computability"

01.12.10  News  Is Antarctica Melting?

12.15.09  Tutorial  Updated Lesson # 1 - Energy Balance: A Fundamental Law of Nature

12.15.09  Tutorial  Added Lesson # 2 - "Forcings" and "Feedbacks"

12.13.09  Added new page's Author and Site Guide

12.12.09  Tutorial  Added Lesson # 1 - Energy Balance: A Fundamental Law of Nature

10.15.09  News  Black Soot and the Survival of Tibetan Glaciers

10.01.09  News  Celebration of Discovery: Earth from Space
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