'Rectal garlic insertion for immune support': Medical chatbots confidently give disastrously misguided advice, experts say - Live Science

If you weren’t already aware of the president’s fixation on oil as a solution to the world’s problems, his recent social media bloviation on Greenland should make it evident (“Trump says oil, gas, and mineral exploration in Greenland is set to begin. It’s not that simple,” BostonGlobe.com, Oct. 14). In the aftermath of his imperialist usurpation of Venezuela’s oil, he set his sights on Iran. As that war imploded, he resorted to a huge oil deal with President Vladimir Putin of Russia aimed at staunching the rise in gas prices that his war of choice caused. Now he’s moved on to Greenland. The fact that Greenland has never produced significant amounts of oil and gas is beside the point. What’s relevant is that President Trump’s obsession with acquiring ever more fossil fuel resources regardless of the cost in lives or geopolitical relationships is skewing both energy policy and foreign policy. Combined with his ideological antagonism for renewable energy, his monomania for oil and gas has left our nation years behind China, our strongest adversary, in the necessary transition to renewable energy sources that do not exacerbate the already alarming warming of the atmosphere and oceans.

Des chercheurs indiens transforment la soudure de déchets de circuits imprimés en nanoparticules d'oxyde d'étain de 7,6 nm pour la dégradation des colorantsDes chercheurs à Goa, en Inde, ont converti de l'étain récupéré de soudures de cartes de circuits imprimés usagées en nanoparticules fonctionnelles de dioxyde d'étain, comme le rapporte le Journal of Nanoparticle Research. La lixiviation acide met l'étain en solution avant sa conversion en SnO2 nanostructuré. La diffraction des rayons X a confirmé une phase rutile tétragonale et la spectroscopie photoélectronique X a montré que l'étain se trouve presque entièrement sous forme Sn(IV). La microscopie électronique a révélé des particules quasi sphériques d'un diamètre moyen de 7,6 nm, offrant une grande fraction surfacique pour la photocatalyse. Sous lumière UV, le matériau a éliminé 100 % de la rhodamine B en 165 minutes et réduit la demande chimique en oxygène de 95,2 %, indiquant une quasi-minéralisation ; la cinétique était de pseudo-premier ordre avec une constante de vitesse de 0,0114 par minute. L'efficacité est restée à 91,96 % après cinq cycles.

)The immortal jellyfish is capable of winding back its lifecycle to become young again. Scientists are unlocking its cellular secrets for new strategies to treat diseases of old age. The tiny translucent jellyfish Turritopsis dohrnii is surprisingly hard to kill. The marine biologist Maria Miglietta of Texas A&M University at Galveston has cut them, boiled them, starved them, overloaded their tanks with salt or plopped them in fresh water – but the nifty creatures seem to cheat death every time. Under duress, they stop in their tracks and fall to the bottom of their tank. Then something astonishing happens: the animals transform into balls of cells that bear no resemblance to the tentacled umbrella shape of adult jellyfish, known as the medusa. Within one to three days, a structure called a polyp – an early jellyfish life stage – buds off from this ball of cells and then grows into a colony, which will eventually sprout new medusae. "From one jellyfish that doesn't die, then you get this colony that can form hundreds more," Miglietta says.

The Southern Fish is home to the bright luminary Fomalhaut, a lovely young star that shines brightly in the evening sky. Look south late this evening to find the bright star Fomalhaut in Piscis Austrinus above the horizon, forming a large triangle with the Moon to its upper right and Saturn to its upper left. Credit: Stellarium/USGS/Celestia/Clementine