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Message: 1
From: National Science Foundation Update <nsf-update@xxxxxxx>
Date: Mon, 27 Apr 2009 08:43:19 -0500 (CDT)
Subject: New Blow for Dinosaur-Killing Asteroid Theory
New Blow for Dinosaur-Killing Asteroid Theory
The enduringly popular theory that the Chicxulub crater holds the clue to the demise of the dinosaurs, along with some 65 percent of all species 65 million years ago, is challenged in a paper to be published in the Journal of the Geological Society on April 27, 2009.
The crater, discovered in 1978 in northern Yucutan and measuring about 180 kilometers (112 miles) in diameter, records a massive extra-terrestrial impact.
When spherules from the impact were ...
This is an NSF News item.
Message: 2
From: National Science Foundation Update <nsf-update@xxxxxxx>
Date: Mon, 27 Apr 2009 09:13:05 -0500 (CDT)
Subject: Informal Science Education (ISE)
Informal Science Education (ISE)
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Document Number: nsf09553
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