Sometimes, climate science deniers will tell you that we can’t predict global temperatures in the future. Sometimes, they’ll say we’re heading for an ice age. Occasionally, contrarians will say that no single weather event can prove human-caused global warming. But then they’ll point to somewhere that’s cold, claiming this disproves climate change. Often, deniers will tell you that temperature records …
Greenhouse gases caused glacial retreat during last Ice Age
A recalculation of the dates at which boulders were uncovered by melting glaciers at the end of the last Ice Age has conclusively shown that the glacial retreat was due to rising levels of carbon dioxide and other greenhouse gases, as opposed to other types of forces. Carbon dioxide levels are now significantly higher than they were at that time, …