Image: Lake Chad from orbit
This Landsat-8 image from 4 July 2014 shows Lake Chad in West Africa's Sahel region – a transition zone between the Sahara Desert to the north and savannahs and woodlands to the south.
Scientists obtain new data on the weather 10,000 years ago from sediments of a lake in Sierra Nevada
A research project which counts with the participation of the University of Granada has revealed new data on the climate change that took place in the Iberian Peninsula around the mid Holocene (around 6.000 ...
ESA image: Richat structure, Mauritania
A giant, geological wonder in the Sahara Desert of Mauritania is pictured in this satellite image.
Image: Cloud bands over the Western Sahara Desert, Mauritania
This photograph of cloud bands over southern Mauritania was taken from the International Space Station with an oblique angle such that the cloud shadows are a prominent part of the view. Beneath the clouds, ...
Study documents catastrophic collapse of Sahara's wildlife
A new study led by the Wildlife Conservation Society and Zoological Society or London warns that the world's largest tropical desert, the Sahara, has suffered a catastrophic collapse of its wildlife populations.
When the Sahara turned to sand
The Sahara wasn't always a desert. Trees and grasslands dominated the landscape from roughly 10,000 years ago to 5,000 years ago. Then, abruptly, the climate changed, and north Africa began to dry out.
Sahara oasis from space
Deep in the Sahara Desert, the Al Jawf oasis in southeastern Libya is pictured in this image from Japan's ALOS satellite.
Paleorivers across Sahara may have supported ancient human migration routes
Three ancient river systems, now buried, may have created viable routes for human migration across the Sahara to the Mediterranean region about 100,000 years ago, according to research published September 11 in the open access ...
African dust clouds worry Caribbean scientists
Each summer, microscopic dust particles kicked up by African sandstorms blow thousands of miles (kilometers) across the Atlantic to arrive in the Caribbean, limiting airplane pilots' visibility to just a ...
Lessons from Timbuktu
Society today might think of science parks, technology centres, business incubators and knowledge precincts as being entirely modern phenomena, representative of the great advances of human endeavour sparked into the life ...
Pollution in Northern Hemisphere helped cause 1980s African drought
Decades of drought in central Africa reached their worst point in the 1980s, causing Lake Chad, a shallow lake used to water crops in neighboring countries, to almost dry out completely.
The Sahara olive tree: A genetic heritage to be preserved
The Saharan cousin of Mediterranean olive trees remains largely unknown. However, this subspecies (called the Laperinne's olive tree) is of great interest for several reasons. IRD researchers and their partners ...
Collaboration aims to harness the energy of 2,000 suns
Today on Earth Day, scientists have announced a collaboration to develop an affordable photovoltaic system capable of concentrating, on average, the power of 2,000 suns, with an efficiency that can collect ...
Experts sound alarm over 'perfect storm' in African Sahel
The vast region of Africa known as the Sahel will descend into large-scale drought, famine, war and terrorist control if immediate, coordinated steps are not taken to avert the perfect storm of climate change ...