During the late Cretaceous period, more than 65 million years ago, hundreds of different species of birds flitted around the dinosaurs and through the forests as abundantly as they flit about our woods and fields today. But after the cataclysm that wiped out most of the dinosaurs, only one group of birds remained: the ancestors […]
One of the rare and brief bursts of cosmic radio waves that have puzzled astronomers since they were first detected nearly 10 years ago has finally been tied to a source: an older dwarf galaxy more than 3 billion light years from Earth. Fast radio bursts, which flash for just a few milliseconds, created a […]
The traditional diet of Greenland natives – the Inuit – is held up as an example of how high levels of omega-3 fatty acids can counterbalance the bad health effects of a high-fat diet, but a new study hints that what’s true for the Inuit may not be true for everyone else. The study, which […]
The original Americans came from Siberia in a single wave no more than 23,000 years ago, at the height of the last Ice Age, and apparently hung out in the north – perhaps for thousands of years – before spreading in two distinct populations throughout North and South America, according to a new genomic analysis. […]
BERKELEY-Comets trailing wispy tails across the night sky are a beautiful byproduct of our solar systemâ€™s formation, icy leftovers from 4.6 billion years ago when the planets coalesced from rocky rubble.