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Alaska and other plaintiffs that include hunters and the California Cattlemen's Association are appealing a federal court ruling last year that upheld the Interior Department's 2008 designation of the bears as threatened because their icy habitat is melting away. Murray Feldman, a lawyer for Alaska and other appellants, told the U.S.

By Matthew Cobb Some religious folk accept that micro-evolution can be observed - shifts in allele frequency due to natural selection - but argue vociferously that no one has ever seen one species evolve out of another. We know that one reason for this apparent lack of evidence for speciation is due to the time-scales...

PRINCETON (US) - "Is evolution predictable? To a surprising extent the answer is 'yes'," says Princeton professor Peter Andolfatto. New research by Andolfatto and colleagues published in the journal suggests that knowledge of a species' genes-and how certain external conditions affect the proteins encoded by those genes-could be used to determine a predictable evolutionary pattern driven by outside factors.