New Method Is the Fastest Way To Find the Best Routes
12 Aug
Science & Technology

New Method Is the Fastest Way To Find the Best Routes

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If you want to solve a tricky problem, it often helps to get organized. You might, for example, break the problem into pieces and tackle the easiest pieces first. But this kind of sorting has a cost. You may end up spending too much time putting the pieces in order. This dilemma is especially relevant to one of the most iconic problems in computer science: finding the shortest path from a specific starting point in a network to every other point. It’s like a souped-up version of a problem you need to solve each time you move: learning the best route from your new home to work, the gym and the supermarket. “Shortest-paths is a beautiful problem that anyone in the world can relate to,” said Mikkel Thorup, a computer scientist at the...
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This Mushroom’s Incredibly Bitter Taste Is New to Science
12 Aug
Science & Technology

This Mushroom’s Incredibly Bitter Taste Is New to Science

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The first analysis of mushroom bitterness reveals ultrapotent compounds By K. R. Callaway edited by Sarah Lewin Frasier Alexander Kurlovich/Alamy Stock Photo Ever bite into something so bitter that you had to spit it out? An ages-old genetic mutation helps you and other animals perceive bitterness and thus avoid toxins associated with it. But while most creatures instinctively spit first and ask questions later, molecular biologists have been trying to get a taste of what bitterness can tell us about sensory evolution and human physiology. A new study, published in the Journal of Agricultural and Food Chemistryis the first analysis of how taste receptors respond to a mushroom’s bitter compounds—which include some of the most potently bitter flavors currently known to science.The bitter bracket mushroom is nontoxic but considered inedible because of its taste. Researchers extracted its...
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Webb Images Giant Exoplanet Candidate in Habitable Zone of Alpha Centauri A
12 Aug
Science & Technology

Webb Images Giant Exoplanet Candidate in Habitable Zone of Alpha Centauri A

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This planet candidate, Alpha Centauri Ab, could be a gas giant, orbiting 1 to 2 times the distance between Sun and Earth, according to two papers to be published in the Astrophysical Journal Letters. If confirmed, this planet would be the closest to Earth that orbits in the habitable zone of a Sun-like star. However, because the planet is a gas giant, astronomers say it would not support life as we know it.This artist’s concept shows what a gas giant orbiting Alpha Centauri A could look like. Image credit: NASA / ESA / CSA / STScI / Robert L. Hurt, Caltech & IPAC.Located in the constellation of Centaurus, Alpha Centauri is the closest stellar system to Earth. Also known as Rigil Kentaurus, Rigil Kent and Gliese 559, the system is made up of the bright binary...
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“Alien: Earth”: This is what Alien’s creature looks most in nature
12 Aug
Science & Technology

“Alien: Earth”: This is what Alien’s creature looks most in nature

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It is one of the most emblematic antagonists in the history of science fiction, the xenomorphe ofAlien has terrified us for decades. Researchers have tried to know what he could look like if he really existed. It has been almost half a century that he makes us scream, even if in space " No one hears us ». The XénomorpheXénomorphe of the saga Alien again returns this year on screens with the new series Alien : Earthwhich depicts events taking place a few years before the 1979 original film by Ridley Scott. Ferocious beast from the macabre imagination of Hr Giger, the xenomorph is a kind of parasiteparasite au skullskull Lying whose different stages of evolution are revealed to us as the saga progresses. And if this enemy has become one of the symbols of science fiction,...
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