New Method of Studying Ancient Fossils Points to Carbon Dioxide As a Driver of Global Warming

A team of American and Canadian scientists has devised a new way to study Earth's past climate by analyzing the chemical composition of ancient marine fossils. The first published tests with the method further support the view that atmospheric CO2 has contributed to dramatic climate variations in the past, and strengthen projections that human CO2 emissions could cause global warming.

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<p><a href="http://www.physorg.com/news109258277.html">New Method of Studying Ancient Fossils Points to Carbon Dioxide As a Driver of Global Warming</a></p> <p>A team of American and Canadian scientists has devised a new way to study Earth's past climate by analyzing the chemical composition of ancient marine fossils. The first published tests with the method further support the view that atmospheric CO2 has contributed to dramatic climate variations in the past, and strengthen projections that human CO2 emissions could cause global warming.</p>