Columbia University

What geology has to say about global warming

Last month I gave a public lecture entitled, "When Maine was California," to an audience in a small town in Maine. It drew parallels between California, today, and Maine, 400 million years ago, when similar geologic processes ...

dateJul 14, 2014 in Earth Sciences
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An overview of President Obama's climate proposal

The evidence of climate change is all around us – in the melting icecaps, rising global temperature, and the warming oceans. The International Energy Agency cautions that we need to reduce our consumption of fossil fuels, ...

dateJun 26, 2014 in Environment
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Making progress on deforestation

In 2005, Brazil was losing more forest each year than any other country. The good news is that today, Brazil has reduced deforestation in the Amazon rainforest by 70 percent, according to a recent study. By not cutting down ...

dateJun 24, 2014 in Environment
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