Evolution, it seems, sometimes jumps instead of crawls. A research team led by a University of Chicago scientist has discovered two key mutations that sparked a hormonal revolution 500 million years ago.
Evolution
Jun 24, 2013
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When people or animals are thrust into threatening situations such as combat or attack by a predator, stress hormones are released to help prepare the organism to defend itself or to rapidly escape from danger—the so-called ...
Plants & Animals
Mar 5, 2013
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Researchers in Australia say they have pinpointed key factors in the early ripening of grapes, providing potential answers for wine growers threatened by global warming.
Environment
Feb 26, 2012
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A new analysis of old data suggests that the endangered erect-crested penguin's bizarre nesting habits—rejecting the first egg they lay—is because they can't feed two chicks, and the second, larger egg has a better chance ...
Plants & Animals
Oct 12, 2022
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Hormonal changes caused by motorboat noise cause clownfish to hide, skip meals and attack their neighbours—putting damselfish in distress.
Ecology
Apr 9, 2020
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One of the most spectacular migrations on Earth is that of the Christmas Island red crab (Gecarcoidea natalis). Acknowledged as one of the wonders of the natural world, every year millions of the crabs simultaneously embark ...
Plants & Animals
Aug 27, 2010
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The Smithsonian's National Zoo says its female giant panda is showing behavioral changes and is focused on building her nest as animal keepers watch for a possible pregnancy.
Plants & Animals
Aug 6, 2013
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Mice that are exposed to the powerful smell of cat urine early in life do not escape from cats later in life. Researchers at the A. N. Severtsov Institute of Ecology and Evolution, Russia, have discovered that mice that smell ...
Plants & Animals
Jul 3, 2015
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The polar bear (Ursus maritimus), one of the largest carnivorous mammals on Earth, is vulnerable to a series of dangers. An international team has established a guide to evaluate the condition of its health, and although ...
Ecology
Apr 7, 2015
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(Phys.org)—A new University of South Florida study of house sparrows, which have become one of the world's most common invasive species, is providing scientists with physiological and behavior markers that could help keep ...
Plants & Animals
Sep 11, 2012
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