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| Scientists solve mystery of icy plumes that may foretell deadly supercell storms Posted: 09 Sep 2021 11:12 AM PDT The most devastating tornadoes are often preceded by a cloudy plume of ice and water vapor billowing above a severe thunderstorm. New research reveals the mechanism for these plumes could be tied to 'hydraulic jumps' -- a phenomenon Leonardo Da Vinci observed more than 500 years ago. |
| Moth wingtips an ‘acoustic decoy’ to thwart bat attack Posted: 09 Sep 2021 09:42 AM PDT Wingtips of certain species of silkmoth are structured to reflect sound and throw off attackers, according to a new study. |
| Soft components for the next generation of soft robotics Posted: 08 Sep 2021 03:05 PM PDT Researchers have developed electrically-driven soft valves to control hydraulic soft actuators. These valves could be used in assistive and therapeutic devices, bio-inspired soft robots, soft grippers, surgical robots, and more. |
| ‘MRI’ scan reveals spectacular ice age landscapes beneath the North Sea Posted: 08 Sep 2021 03:05 PM PDT Spectacular ice age landscapes beneath the North Sea have been discovered using 3D seismic reflection technology. Similar to MRI (magnetic resonance imaging) the images reveal in unprecedented detail huge seafloor channels - each one 10 times wider than the River Thames. |
| Who was king before Tyrannosaurus? Uzbek fossil reveals new top dino Posted: 08 Sep 2021 03:04 PM PDT A new dinosaur from the lower Upper Cretaceous of Uzbekistan, Ulughbegsaurus uzbekistanensis, was described from a single maxilla fossil. The research team estimated that this carcharodontosaurian weighed over 1000 kg and measured 7.5--8.0 meters in length, much larger than previously described predators from the same formation. The fossil's age, location, and co-occurrence with the smaller tyrannosaurid Timurlengia shed light on the transition from carcharodontosaurians to tyrannosaurids occupying the apex predator niche. |
| Posted: 06 Sep 2021 06:10 AM PDT Ever wondered why birds are born to peep, chirrup and sing? Surprisingly international avian experts have shown this to be true, literally, after finding fluctuations in bird species' heartbeat responses to their parents' calls -- from inside the egg. Using non-invasive techniques, a study found evidence of prenatal auditory learning in embryos of three vocal learning species (Superb fairy-wren, red-winged fairy-wren and Darwin's small ground finch) and two vocal non-learning species (little penguin and Japanese quail). |
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