Hosted on MSN19m
Deep Sea Beryllium Spike Shows Something Big Happened 10 Million Years Ago, But What?
The Pacific seafloor laid down around 10 million years ago is dramatically enriched in beryllium-10, compared to older and younger layers. The geologists who discovered this spike propose it could be ...
Why are rubies red and emeralds green? Their colors come from the same metal in their atomic structure
The colors of rubies and emeralds are so striking that they define shades of red and green – ruby red and emerald green. But ...