Botanical remains can give information about past climate, economic practices and changes within the environment.

For instance, he deduced past climates from analysis of ancient tree rings.

Ice core data from glaciers provides insight into past climate.

Working 16 hours a day, often at high altitude, the team drill deep into the ice to extract vital clues to the Earth's past climate.

Paleoclimatology is the study of past climate over a great period of the Earth's history.

Reconstructions of past climate - whether from 1,000 or 11,000 years ago - are more than ancient history.

The lake's sediments were studied to determine past climate and human activities.

Magnetic measurements have been used to investigate past climate.

How can one learn about past climate in Greenland?

Mark Chandler uses past climates to see what Earth's future climate may be.