Poaching problem

Poaching problem
As elephant poaching soars, carbon dating, a mainstay of archeology, could be used to date ivory, based on heavy isotopes left over from the atom-bomb era. More »

When dead men speak…

When dead men speak…

How do bones, isotopes, historic records, DNA and grave goods tell us about the dead? We check out the example of King Richard III, found in a parking lot! More »

North Korea’s nukes

North Korea’s nukes

Underground nuclear tests have been the biggest roadblock to a comprehensive test ban. How are these explosions detected, and how reliably? More »