13/05/2010

Chaotic space traffic needs rules: US general

A top US general on Thursday called for international rules to control chaotic space traffic, warning satellites are increasingly at risk of collision.

Feathers too weak for early bird flight

(PhysOrg.com) -- The evolution of flight took longer than previously thought with the ancestors of modern birds “rubbish” at flying, if they flew at all, according to a Manchester scientist.

Invasive 'tunicate' appears in Oregon's coastal waters

An aggressive, invasive aquatic organism that is on the state's most dangerous species list has been discovered in both Winchester Bay and Coos Bay, and scientists say this "colonial tunicate" - Didemnum vexillum - has serious ...

Why a whiff of cats or rats is scary (if you're a mouse, that is)

If you were a mouse, a mere whiff of a cat, rat or snake would be enough to send you into a fearful state. Your stress hormone levels would go up and you'd begin to take extra precautions, hugging the ground as you carefully ...

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