Discover 3 science news from the latest 24 hours in our #PeerusWhatsNew, now on Medium.
1 In Australia, 7% of reptiles are threatened with extinction, warned IUCN, an NGO campaigning for the protection of nature.
In an updated version of its “Red List” of threatened species, the organization said that virtually all Australian reptile species were now considered threatened and one in 14 was at risk of extinction.
A total of 975 reptile species in Australia are currently on the Red List, IUCN said. Climate change but also other wild animals that hunt reptiles, such as cats, are the main causes of this risk of extinction.
2 New researches might confirm that Uranus may have rocked due to a giant collision that happened 4 billion years ago.
One of Voyager 2’s goals during his visit to Uranus was to collect new data to try to understand the origin of the strange inclination of the planet’s axis of rotation, which is almost parallel to its plan. orbital around the Sun, while the other planets have rather perpendicular axes.
Numerical simulations suggest that a transverse collision between Uranus and a rocky planet at least twice as massive as Earth, a small super-land.
3 New research suggests that making objects invisible may soon be possible thanks to electromagnetic waves.
A Swiss university is working to control the propagation of waves through small loudspeakers placed at strategic points and used as acoustic relays. Their role is to amplify, attenuate and phase out the sounds, counterbalancing by electric control, the undesirable effects resulting from the diffusion on the obstacles.
This method could be used to suppress echoes when a wave hits an object like a submarine, making it undetectable to sonar. It could also inspire researchers to make objects invisible or capture images through opaque media.
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