Extreme climate change may have spurred people to work together.

Necessity is the mother of invention — and this adage may be true for the birth of entire civilizations. Extreme changes in the Earth’s climate that happened around 3,000 years ago, during which the Sahara Desert became completely arid and the El Niño cycle strengthened, could have kick-started civilizations in some places on Earth, says Nick Brooks of the University of East Anglia in Norwich, UK.

Read the story here.

Extreme climate change may have spurred people to work together.

Necessity is the mother of invention — and this adage may be true for the birth of entire civilizations. Extreme changes in the Earth’s climate that happened around 3,000 years ago, during which the Sahara Desert became completely arid and the El Niño cycle strengthened, could have kick-started civilizations in some places on Earth, says Nick Brooks of the University of East Anglia in Norwich, UK.

Read the story here.