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Latest Lee R. Kump Stories

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2011-12-03 11:56:33

The appearance of oxygen in the Earth's atmosphere probably did not occur as a single event, but as a long series of starts and stops.

2011-06-06 19:42:47

The rate of release of carbon into the atmosphere today is nearly 10 times as fast as during the Paleocene-Eocene Thermal Maximum (PETM), 55.9 million years ago, the best analog we have for current global warming.

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2007-09-13 18:04:29

A switch from predominantly undersea volcanoes to a mix of undersea and terrestrial ones shifted the Earth's atmosphere from devoid of oxygen to one with free oxygen, according to geologists.

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2005-02-22 00:00:00

Volcanic eruptions in Siberia 251 million years ago may have started a cascade of events leading to high hydrogen sulfide levels in the oceans and atmosphere and precipitating the largest mass extinction in Earth's history, according to a Penn State geoscientist.


Word of the Day
prosopography
  • a study of the individuals in a group of people within a specific context and their relationships.
  • In rhetoric, the description of any one's personal appearance.
The word 'prosopography' comes from a Latin word meaning 'description of a person’s appearance' from Greek roots meaning 'face' or 'person' and 'writing'.