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The evolution of bats is still a mystery, as the fragile flying mammals have left few fossils behind. A new study published in the journal "Nature" describes the oldest bat ever and what the fossil has revealed: bats first flew, and after that they developed echolocation. "This new bat [fossil] is clearly a flying an... |
14 February 2008
02:38 GMT |
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Human ear cannot detect sounds that have frequencies lower than 20 Hz (infrasounds) or over 20 kHz (called ultrasounds). That's why some species may appear quite silent for us, while in fact they are very noisy... We only lack their hearing to figure this out.1.Dolphins and toothed whales are famous for their so... |
20 December 2007
14:06 GMT |
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1.The first cetacean was Pakicetus, which lived 55 million years ago. It was a shore animal with well-developed four limbs. The first dolphins (and toothed whales) are considered the Squalodontidae, which lived 33 to 15 MA years ago. They were 3 m (10 ft) long and had large teeth. There are 32 dolphin species. The sm... |
16 November 2007
18:42 GMT |
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Humans see with their eyes, dogs are said to "smell" things and bats literally see with their ears. The little flying mammals have a complex sonar, employing ultrasounds (sounds with a frequency over 20 kHz, which cannot be heard by the human ear). Bats employ the sonar especially when hunting and flying through cave... |
12 November 2007
03:29 GMT |
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Those bat species that emit ultrasounds to spot prey and avoid obstacles present a high variation in the FOXP2 gene, pointing that mutations in the gene boosted the evolution of the bat sonar. The protein encoded by FOXP2 appears to control coordination between mouth muscles and speech. In 2001, it was connected to s... |
26 September 2007
02:48 GMT |
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For a long time now, humans have been fascinated by the spectacular fights between the huge sperm whales and giant squids, that triggered the myth of the kraken, the island big sea monster. But how do the whales manage to detect the squids in the complete darkness of the deep ocean? It's all in their ultrasound ... |
11 September 2007
07:23 GMT |
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Symantec has unveiled the free beta version of the Norton AntiBot, which is a behavioral-based defender built to detect and remove in real time the threats that could have been missed by the traditional antivirus products. The beta version of the Norton AntiBot will run only on Windows XP and Vista. Symantec`s direct... |
9 June 2007
08:14 GMT |
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Biologists got alarmed when the killer whales (orcas) of Washington State's Puget Sound started disappearing. Using high technology supersensitive microphones, Ken Balcomb has been eavesdropping on the region's resident killer whales. Unlike migratory orcas, these ones spend their whole lives among sounds.... |
8 May 2007
04:59 GMT |
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The long-awaited moment for audio producers and enthusiasts has come: Cakewalk's Sonar 6 is ready for shipping! The hailed piece of code comes in two flavors, Sonar Home Studio 6 and Sonar Home Studio 6 XL and all the efforts have been all directed towards the ease of use and easing the home studio owner's ... |
1 March 2007
10:55 GMT |
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