When was it first determined that greenhouse gas emissions were causing warming?
To What Degree?
What science is telling us about climate change. Leading climate change experts discuss one of the most complex scientific puzzles ever to confront humankind.
What was the original link between the military and climate science?
When were increasing levels of CO2 first documented?
What was the origin of climate modeling?
How did climate change become a major area of study?
There had been a belief that the Earth was cooling, not warming. What changed?
When did we learn that climate change involves more than just the warming of the planet?
How has NSF supported climate change research?
Why study climate change?
What are some of the climate change projections made by the Intergovernmental Panel on Climate Change?
How do we know the Earth is warming?
How much has the Earth warmed recently?
Why is it important to reconstruct the long history of the Earth's climate, and how can we do that?
If the Earth has warmed before, why be concerned now?
What is unusual about the Earth's warming during the past century or so?
What does carbon dioxide have to do with global warming?
What is the source of the increased greenhouse gases in the atmosphere?
How do we know the rising carbon dioxide is not part of a natural cycle?
How much warming do we face, and what are the uncertainties involved?
How are climate models being improved?