The first BECs were made in 1995 from alkali metal atoms, such as rubidium, which have one electron in their outer shell. Over the past few years BECs have also come made from atoms that have two ...

The ratios of strontium isotopes in fossil shark teeth can be used to better understand how coastal environments evolved in ...

Sharks have ruled the Earth’s oceans for 400 million years and recent research on fossilized shark teeth has led to the discovery of an innovative method for dating ancient sediments.