What we think of as the classic West Coast climate began just about 4,000 years ago, finds a study on climate trends of the Holocene era. People often say things like Phoenix has always been dry; ...

Millet has been an important crop in East Asia for much of the Holocene, a period beginning about 11,700 years ago. To better ...

Earth's 4.5 billion year geological history is full of death and rebirth, mass extinctions and explosions of biodiversity, with different periods often marked by cataclysmic changes that radically ...