Public Radio International23h
A century since the roots of human lineage were traced to Africa
It’s been 100 years since Australopithecus africanus was first described in the journal Nature, suggesting that the African continent had been the birthplace of humanity. Host Carolyn Beeler speaks ...
Balancing the pressure: How plant cells protect their vacuoles
Plants droop and shed their leaves when parched, but with a splash of water, their stems regain strength and their leaves ...