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Latest Steven Davis Stories

2011-10-17 21:57:49

It is difficult to measure accurately each nation's contribution of carbon dioxide to the Earth's atmosphere.

2011-05-10 15:09:14

Accurately calculating the amount of carbon dioxide emitted in the process of producing and bringing products to our doorsteps is nearly impossible, but still a worthwhile effort, two Carnegie researchers claim in a commentary published online this week by Proceedings of the National Academy of Sciences.

2010-10-04 22:31:58

Geologists have found evidence that some 55 million years ago a river as big as the modern Colorado flowed through Arizona into Utah in the opposite direction from the present-day river.

2010-06-15 14:17:55

The Green Revolution of the late 20th century increased crop yields worldwide and helped feed an expanding global population.

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2010-03-08 15:19:07

A new study by scientists at the Carnegie Institution finds that over a third of carbon dioxide emissions associated with consumption of goods and services in many developed countries are actually emitted outside their borders.


Word of the Day
ecotone
  • A transitional zone between two communities containing the characteristic species of each.
The word 'ecotone' comes 'eco-' plus a Greek root meaning 'tension'.