* Tit-for-tat: birds found to repay wartime 
help
Pied flycatchers and red-winged blackbirds share two
traits, studies suggest: they're feisty defenders
and shrewd account keepers.

http://www.world-science.net/exclusives/080706_flycatcher


* Atoms interact unexpectedly, researchers
report:
A surprising process may change our understanding of
chemical reactions in the atmosphere and our bodies.

http://www.world-science.net/othernews/080702_deuterium


* In mice, "youth" drug seen prolonging vigor 
but not life:
A red wine ingredient can ward off many ill effects
of aging in mice who start taking it at midlife,
researchers have found.

http://www.world-science.net/othernews/080703_resveratrol


* Study finds lasting benefit in banned 
mushroom drug:
The compound psilocybin may bring psychological
benefits, but also harm if taken without proper
supervision, researchers say.

http://www.world-science.net/othernews/080701_mushrooms


* Secret of the great violins? The wood, study
suggests:
The elusive key to the unmatched sound of 
Stradivari may lie in uniformity of density, 
a scientist claims.

http://www.world-science.net/othernews/080701_violins



* CORRECTION

Due to an editing error, the June 26 article "Most 
'primitive' four-legged animal described" stated 
that early animals made a major transition "from 
land to sea." The shift was actually the other way 
around. World Science apologizes for the error.



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