Dinosaurs died out some 65 million years ago, so how could we possibly determine the color of their skin--or feathers? As Scientific American's Eric R. Olson explains, new fossil evidence is pointing the way. Episode written by Kate Wong.
Deadline: Jul 30 2013
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The Seeker desires a method for producing pseudoephedrine products in such a way that it will be extremely difficult for clandestine che
Deadline: Jul 25 2013
This challenge provides an opportunity for Solvers to build a web-based or mobile “app” to explore data relationships in scholarly conte
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