Taxonomy term

sahara

Saharan dust a storm killer

Each year between 900 million and 4 billion metric tons of dust from the Sahara Desert in Africa is swept into the atmosphere and blown around the world. In places like Texas, the dust often leads to poor air quality. A new study suggests that desert dust may also suppress the formation of severe storms and hurricanes in the southern United States.

06 Nov 2018

Weedy seeds gathered in once-green Sahara

Today, the vast and arid Sahara Desert seems an unlikely place to find early signs of seed gathering and plant cultivation in Africa, but new evidence shows that, 10,000 years ago, people were collecting, sorting and saving seeds near a rock shelter known as Takarkori.

28 Jun 2018

Tropical rainfall shifts resulted in greener Sahara

Six thousand years ago, the Sahara — today the world’s largest nonpolar desert, stretching over an area larger than the contiguous United States — was dotted with lakes and vegetation. Rock paintings from that time depict a much wetter landscape, and show elephants, hippos, antelope and many other animals living in the region.

21 Apr 2017

Blogging on EARTH: Second dispatches from EGU

EARTH’s Carolyn Gramling is in Vienna, Austria, at the European Geophysical Union meeting this week. Here are a few more sessions that she has found interesting (for more from the meeting, see her first “Dispatches”).

07 Apr 2011