Paul Sereno

Seas of sand form the core of the Sahara, the world's largest desert. Our expedition caravan wound slowly between dunes, probing for terrain hard enough to get us to our...

One mile long, rising as barren rock no more than 10 feet above a parched plain of patchy grass and thorny acacia, is an area known as Tchinekankaran (chin-kan-karan), or...

Petrified tree trunks jut from the desert floor, and fossil jaws and bones of nameless beasts peek out from a barren landscape. Nomad legend describes it as "The place where...

Before COVID-19 shut down travel, I led expeditions that discovered some 25 tons of rare fossils scattered across the Sahara Desert, in remote areas of the West African country of...