Evolution and Global Warming are facts, not theories!

Hand Evolution by Megan Godtland

Science and Reason, use them to guide your life.

Microwave Earth by Megan Godtland

Scientists Stats

Sioux Falls Scientists endorse Earth's Changing Climate for describing how
global warming is a fact and not "just a theory." The evidence is
overwhelming and we humans are responsible for it.

Earth's Changing Climate
Lectures by Professor Richard Wolfson

Earth's Changing Climate (2007) - 12 lectures, 6 hours
Earth' s Changing Climate at TheGreatCourses.com

In 2007 the Intergovernmental Panel on Climate Change concluded that "warming of the climate system is unequivocal, as is now evident from observations of increases in global average air and ocean temperatures, widespread melting of snow and ice, and rising global mean sea level." Representing a consensus of hundreds of scientists, the report went on to note that human activity is "very likely" the cause.

This course of 12 half-hour lectures reviews the most up-to-date research on climate change, explaining the concepts, tools, data, and analysis that have led an overwhelming number of climate scientists to conclude that Earth is warming and that we humans are in great part responsible.

Behind the Consensus

Whatever your views on climate change, it's important to understand how the current scientific consensus on global warming evolved out of basic physical principles and a broad range of observations. In a lucid presentation designed for non-scientists, you will learn about:

1. The difference between climate and weather.

2. The concept of energy balance, which governs the natural warming of the planet by the Sun and is the key to a stable climate.

3. The greenhouse effect, which makes Earth warmer and more hospitable than it would otherwise be due to naturally occurring gases in the atmosphere, such as carbon dioxide and water vapor.

4. The carbon cycle, which controls the rate at which carbon dioxide released by fossil-fuel combustion accumulates in the atmosphere, and how long it remains to enhance the natural greenhouse effect.

Along with these and other concepts, you will investigate the "fingerprints" of global climate change, ranging from borehole temperatures to melting glaciers to the altered behavior of plant and animal species. These and other indicators show that Earth has been warming at an unprecedented rate in recent decades.

You will also explore the physical mechanisms behind these changes and their connections to the increasing concentration of greenhouse gases in the atmosphere since the start of the Industrial Revolution. And you will look at the techniques for projecting future climates, along with the options for switching to alternative energy technologies to avoid the most disruptive scenarios that now seem possible.

Professor Richard Wolfson is the Benjamin F. Wissler Professor of Physics at Middlebury College, where he has taught for over 25 years. He holds a Master's degree in Environmental Studies for the University of Michigan and a Ph. D. in Physics from Dartmouth College. Professor Wolfson's research is published widely in scientific journals. he is also a contributor to Scientific American. His books include Simply Einstein: Relativity Demystified.

12 Lectures - 30 minutes each

1: Is Earth Warming? 7: The Human Factor
2: Butterflies, Glaciers and Hurricanes 8: Computing the Future
3: Ice Ages and Beyond 9: Impacts of Climate Change
4: In the Greenhouse 10: Energy and Climate
5: A Tale of Three Planets 11: Energy - Resources and Alternatives
6: Global Recycling 12: Sustainable Futures?


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Earth's Changing Climate
Lectures by Professor Richard Wolfson

Sioux Falls Scientists endorse Earth's Changing Climate for describing how
global warming is a fact and not "just a theory." The evidence is
overwhelming and we humans are responsible for it.