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Dolphins are considered the fastest sea mammals. Smaller dolphins reach 35-40 km (22-25 mi) per hour, but the orca or killer whale, that is in fact the world's largest dolphin, reaches 54 km (33 mi) per hour, which is a lot in the water. The question is: why not faster? The answer is given by a new research publ... |
1 April 2008
03:25 GMT |
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Wild horses (today, only Prjewalski horses are a wild species) prefer the fashion of short tails. Domestic and bewildered horses (read mustangs) wear longer tails. And here comes Summer Breeze, a Kansas mare. There's nothing fake in the image you see. Tail extensions are excluded. This exceptional horse has such... |
10 March 2008
14:06 GMT |
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Two-headed reptiles appear from time to time. But this two-headed turtle discovered by a turtle collector is an extremely rare example of a conjoined-twin birth. "The turtle would have likely died in the wild because it swims awkwardly and would be an easy target for predators," said Jay Jacoby, manager of Big Al... |
8 October 2007
15:36 GMT |
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Something that was witnessed for the first time by astronomers wreaked havoc in space: the impact between a comet and a solar hurricane. The cosmic crash was captured by a NASA Solar Terrestrial Relations Observatory (STEREO) satellite on April 20 and cut off the Encke comet's plasma tail while moving within Mer... |
8 October 2007
03:34 GMT |
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Some think they are actually a star. Some think they are comets. Astronomers have just found a distant star that moves through space at enormous speeds and has a huge, comet-like tail. The tail is colossal, 13 light years in length and was detected by NASA's Galaxy Evolution Explorer (Galex) space telescope. Mir... |
17 August 2007
03:00 GMT |
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If bonsai proved that the Japanese people can handle the art of "dwarfism", with Onagadori cocks they show how they can deal with gigantism, too. Onagadori ("Honourable Fowl" in Japanese) is a breed of domestic chicken and the cocks can have a tail reaching 10 m! This is an unchallengeable record amongst birds and pe... |
24 July 2007
14:46 GMT |
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Since its discovery, this beast puzzled the researchers. Tyrannosaurus rex, which lived in western North America 70 to 65 million years ago, till the disappearance of all the dinosaurs, was amongst the largest ever known land predators: the largest females reached 13 m (40 ft) length and 6.8 tons in weight. But when ... |
17 April 2007
05:03 GMT |
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There is a common concept amongst biologists about sexual selection and that many exaggerated male traits are the result of it. For example, sexual selection is regarded behind the peacock's tail or deer's antlers. But a team of Exeter and Cambridge universities has proven a common example of sexual select... |
6 April 2007
06:43 GMT |
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