Sleeping in on the weekend can’t make up for lost sleep – Using the weekend to catch up on sleep is ineffective at making-up for lost sleep and offsetting the consequences to a person’s health.

Source: Christopher M. Depner, et al. Ad libitum Weekend Recovery Sleep Fails to Prevent Metabolic Dysregulation during a Repeating Pattern of Insufficient Sleep and Weekend Recovery Sleep. Current Biology, 2019.

Army game-theory research better allocates military resources, fight cancer – US Army game-theory research using artificial intelligence may help treat cancer and other diseases, improve cybersecurity, deploy Soldiers and assets more efficiently and even win a poker game.

Source: Noam Brown, Tuomas Sandholm. Superhuman AI for multiplayer poker. Science, 2019.

Enigmatic Skull Found in Greece Suggests Early Homo sapiens Reached Europe 210,000 Years Ago – A 210,000-year-old partial skull found in southern Greece about four decades ago has been identified as the earliest example of anatomically modern Homo sapiens discovered outside the African continent.

Source: Katerina Harvati, et al. Apidima Cave fossils provide earliest evidence of Homo sapiens in Eurasia. Nature, 2019.

Thin Layer of ‘Frozen Smoke’ Could Sustain Life on Mars – Earth is the only home we’ve got—for now. Scientists are working to turn Mars into “plan[et] B.” A team from Harvard University, NASA’s Jet Propulsion Laboratory (JPL), and the University of Edinburgh have …

Source: R. Wordsworth, L. Kerber, C. Cockell. Enabling Martian habitability with silica aerogel via the solid-state greenhouse effect. Nature Astronomy, 2019.

Snowball the Dancing Cockatoo Has Upped His Game, Study Finds – The bird learned new dance moves on his own, researchers find, a novelty in the animal world.

Source: R. Joanne Jao Keehn, John R. Iversen, Irena Schulz, Aniruddh D. Patel. Spontaneity and diversity of movement to music are not uniquely human. Current Biology, 2019.

Anorexia not just a psychiatric problem, scientists find – Discovery of metabolic causes opens door to new treatments for dangerous eating disorder

Source: Christopher Hübel, et al. Genomics of body fat percentage may contribute to sex bias in anorexia nervosa. American Journal of Medical Genetics Part B: Neuropsychiatric Genetics, 2018.

Fossil Friday: bird encased in amber has an unique, “extreme” toe – The bird's hyper-elongated third toe is longer than its whole lower leg, the authors report.

Source: Lida Xing, et al. A New Enantiornithine Bird with Unusual Pedal Proportions Found in Amber. Current Biology, 2019.

Satellite imaging used to spot the largest seaweed bloom in the world – The record-breaking belt of brown algae stretches from West Africa to the Gulf of Mexico.

Source: Mengqiu Wang, et al. The great Atlantic Sargassum belt. Science, 2019.

Ejected moons could help solve several astronomical puzzles – Runaway moons could explain several astronomical mysteries, according to a new study.

Source: Mario Sucerquia, Jaime A. Alvarado-Montes, Jorge I. Zuluaga, Nicolás Cuello, Cristian Giuppone. Ploonets: formation, evolution, and detectability of tidally detached exomoons. arXiv, 2019.

This solar-powered device produces energy and cleans water at the same time – Someday, the two-for-one machine could help curb electricity and freshwater shortages.

Source: Wenbin Wang, et al. Simultaneous production of fresh water and electricity via multistage solar photovoltaic membrane distillation. Nature Communications, 2019.

Earth Has Room For 1 Trillion More Trees – Researchers who provide that estimate believe this is the best and cheapest way to combat global warming.

Source: Jean-Francois Bastin, et al. The global tree restoration potential. Science, 2019.