NEW YORK — Dinosaurs were in decline long before an asteroid strike polished them off about 66 million years ago, a study says.
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By Malcolm Ritter The Associated Press
NEW YORK — A paralyzed 24-year-old man has regained some use of his right hand, controlling it with signals relayed from electronic sensors in his brain.
Ian Burkhart of Dublin, Ohio, can grasp a bottle, pour its contents into a jar, pick up a stick and stir the liquid. He can grab a credit card and swipe it through a reader. He can move individual fingers and hold a toothbrush.
NEW YORK — An Internet investor has enlisted famed physicist Stephen Hawking and Facebook founder Mark Zuckerberg to help him with a futuristic plan for seeking life in outer space.
NEW YORK — How did evolution produce a monstrous killer like T. rex? A fossil find in Central Asia is giving scientists a glimpse of the process.
NEW YORK A new study says a person’s risk of becoming depressed or hooked on smoking may be influenced by DNA inherited from Neanderthals.
Researchers found evidence that one bit of Neanderthal DNA can boost the risk of tobacco addiction, while others can slightly raise or lower the risk of being diagnosed with depression.
NEW YORK A new analysis is challenging the idea that smoking marijuana during adolescence can lead to declines in intelligence.
Instead, the new study says, pot smoking may be merely a symptom of something else that’s really responsible for a brainpower effect seen in some previous research.
NEW YORK The remains of a mammoth that was hunted down about 45,000 years ago have revealed the earliest known evidence of humans in the Arctic.
Marks on the bones, found in far northern Russia, indicate the creature was stabbed and butchered. The tip of a tusk was damaged in a way that suggests human activity, perhaps to make ivory tools.
NEW YORK The warming Arctic has set another record.
The average air temperature over Arctic land reached 2.3 degrees F (1.3 degrees C) above average for the year ending in September. That’s the highest since observations began in 1900.
NEW YORK A private space company announced Tuesday that it had landed a rocket upright and gently enough to be used again, a milestone in commercial aeronautics.
Reusing rockets, rather than discarding them, would be a big step toward making space flight less expensive.
NEW YORK A volunteer firefighter badly burned in a 2001 blaze has received the most extensive face transplant ever, covering his skull and much of his neck, a New York hospital announced Monday.