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Climate in the southwest may suffer sustained drought
Edward Cook reconstructed the Southwest's past climate using tree ring records. The region has a history of drought, and he said global warming might increase this trend.
February 16, 2009
Paleontologist says dinosaurs were not special, just lucky
Columbia University paleontologist Steve Brusatte thinks dinosaurs might have been 'just lucky' to have ruled Earth for so long.
February 15, 2009
Jeremy Jackson recalls some ocean success stories
Jeremy Jackson said scientists know how to save ocean reefs and fisheries. But doing it is a matter of political will. He said the importance of success stories is that they provide a model and inspiration.
February 15, 2009
Bye bye birdies: Migration patterns are changing
Snow geese are spending winters 200 miles farther north than usual, and purple finches are a whopping 400 miles more to the north of their usual winter hangout.
February 10, 2009
Dinosaurs were killed by volcanoes?
Since 1980, scientists have believed a meteorite impact in the Yucatan caused a mass extinction of species, including the dinosaurs. But geologist Gerta Keller of Princeton disagrees.
February 9, 2009
Cooperation necessary for polar research
Polar scientist Larry Hinzman talk about the technical challenges - and vital importance - of doing research at Earth's poles.
February 7, 2009
Google Earth goes undersea
In addition to being able to place markers and content below the sea surface, Google Earth has added bathymetry and a simulated ocean surface.
February 3, 2009
Future levels of pollution will reflect our choices
That depends a lot on the choices that we make, says a NASA scientist, in response to a question from a student in northern China.
January 24, 2009
Warming climate: Which ice sheets melt first
The East Antarctic ice sheet may be at the end of the Earth, says geophysicist Donald Blankenship, but it's much more important than its distance implies. Hear Blankenship talk about his concern over melting ice sheets.
January 23, 2009
Holding out for those last few lines of data
The weather cleared, the plane flew, the data was captured!
January 18, 2009
