In nature, how do host species survive parasite attacks? This has not been well understood, until now. A new mathematical model shows that when a host and its parasite each have multiple traits governing their interaction, ...
Plants & Animals
Mar 4, 2012
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We often think of rainforests and coral reefs as hotspots for biodiversity, but mountains are treasure troves for species too -- especially in the tropics, scientists say. But what drives montane biodiversity? The diversity ...
Environment
Jun 8, 2011
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Some birds that live near noisy sites can alter their songs to deal with din. But closely related species with similar songs may tweak their tunes in different ways, says a new study led by Clinton Francis of the National ...
Plants & Animals
May 26, 2011
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As global temperatures rise, suitable sites for many plants and animals are shifting to cooler and higher ground. Can we predict which species will be able to move far or fast enough to keep up? A new study says the secrets ...
Ecology
May 12, 2011
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The most toxic, brightly colored members of the poison frog family may also be the best athletes, says a new study.
Plants & Animals
Mar 29, 2011
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Humans aren't the only ones who grow old gracefully, says a new study of primate aging patterns. For a long time it was thought that humans, with our relatively long life spans and access to modern medicine, aged more slowly ...
Plants & Animals
Mar 10, 2011
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For the vast majority of plants and animals, the 'bigger is better' view of evolution may not be far off the mark, says a new broad-scale study of natural selection. Organisms with bigger bodies or faster growth rates tend ...
Evolution
Mar 7, 2011
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In birds as in people, female fertility declines with age. But some female birds can slow the ticking of their biological clocks by choosing the right mates, says a new study.
Plants & Animals
Jan 18, 2011
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Solitary snails in search of a mate put off parenthood as long as possible in the hopes that a partner will appear. But when Physa acuta snails smell predators, they don't wait as long for a mate. Scared snails settle for ...
Plants & Animals
Aug 16, 2010
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Saber-toothed cats may be best known for their supersized canines, but they also had exceptionally strong forelimbs for pinning prey before delivering the fatal bite, says a new study in the journal PLoS ONE.
Archaeology
Jul 3, 2010
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