Vaping is linked to eating disorder risk among U.S. college students – A new study published in the journal Eating Behaviors found that vaping or e-cigarette use is associated with a heighted risk of developing an eating disorder among US college students. This finding is particularly important given the common use of vape pens and e-cigarettes and an increase in the prevalence of eating disorders amidst the COVID-19 pandemic among young people. The study, which analyzed a sample of over 51,000 U.S.

Source: Kyle T. Ganson, Jason M. Nagata. Associations between vaping and eating disorder diagnosis and risk among college students. Eating Behaviors, 2021.

Ancient solar storm proves Vikings lived in Newfoundland by at least AD 1021, scientists say – Norse legends and archeological evidence had scientists guessing when the Vikings erected a thousand-year-old settlement in Newfoundland. But the discovery of an ancient solar storm offers new evidence, nailing down the exact year they lived there.

Source: Margot Kuitems, et al. Evidence for European presence in the Americas in ad 1021. Nature, 2021.

Disturbing Answers to the Mystery of Tuskless Female Elephants – Poaching brings evolutionary pressure for tusklessness

Source: Chris T. Darimont, Fanie Pelletier. Of war, tusks, and genes. Science, 2021.

Watch this wooden knife cut effortlessly through juicy, medium-well-done steak – Also: A hardened wood nail performed as well as its stainless steel counterpart.

Source: Bo Chen, et al. Hardened wood as a renewable alternative to steel and plastic. Matter, 2021.

Origins of domesticated horses traced to north Caucasus region, study finds – Horses were first domesticated in the northern Caucasus region, before conquering the rest of Europe and Asia within a few centuries, according to research published Wednesday by the journal Nature.

Source: Pablo Librado, et al. The origins and spread of domestic horses from the Western Eurasian steppes. Nature, 2021.

Martian floods? Scientists say rover found evidence – NASA's Perseverance rover discovered evidence that the Jezero crater on Mars it touched down in was once a lake bed fed by a river with floods, scientists say.

Source: Perseverance rover reveals an ancient delta-lake system and flood deposits at Jezero crater, Mars. Science, .

A planet 6,000 light years from Earth reveals how the end of our solar system will look – A darkened planet circling the feeble remnant of a burned-out star about 6,000 light-years from Earth shows what our own solar system will look like at the end.

Source: J. W. Blackman, et al. A Jovian analogue orbiting a white dwarf star. Nature, 2021.

Covid-19 news: Pfizer trial finds booster vaccine over 95% effective – The latest coronavirus news updated every day including coronavirus cases, the latest news, features and interviews from New Scientist and essential information about the covid-19 pandemic

Source: Ben Y. Reis, et al. Effectiveness of BNT162b2 Vaccine against Delta Variant in Adolescents. New England Journal of Medicine, 2021.

Amazing 100-million-year-old crab found perfectly preserved in amber – The pristine fossil fills huge gaps in the fossil record, explaining how early crabs left the ocean for land.

Source: Javier Luque, et al. Crab in amber reveals an early colonization of nonmarine environments during the Cretaceous. Science Advances, 2021.