The latest scientific news and articles on global warming, extraterrestrial planets, stem cells, avian influenza, autism, nanotechnology, dinosaurs, evolution - the latest discoveries in astronomy, anthropology, biology, chemistry, climate and environment, computers, engineering, healthcare and medicine, math, physics, psychology, technology and more - from the world's leading universities and research organizations.

In what has become an all too familiar—and depressing—outcome in the decadeslong search for an effective AIDS vaccine, yet another candidate has failed in a large-scale study
One-third of Sun-like stars may have eaten their planets
Like the Greek god Chronos, a good number of stars devour their children. As many as one-third of them have swallowed one or more of their own planets, a new study suggests. The findings could help astronomers rule out stellar systems unlikely to contain Earth-like worlds
Having SARS-CoV-2 once confers much greater immunity than a vaccine—but vaccination remains vital
The natural immune protection that develops after a SARS-CoV-2 infection offers considerably more of a shield against the Delta variant of the pandemic coronavirus than two doses of the Pfizer-BioNTech vaccine, according to a large Israeli study that some scientists wish came with a “Don’t try this at home” label
COVID-19’s origins still uncertain, U.S. intelligence agencies conclude
The U.S. Intelligence Community (IC) has concluded it doesn’t have enough information to resolve whether the COVID-19 pandemic began because of a natural jump of SARS-CoV-2 from animals to humans or a laboratory accident.After a 90-day review requested by U.S

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