Namibia is one of the most sparsely populated countries on Earth, with a staggering 97% of its land remaining largely empty.

Desert hiking trails promise unique landscapes and challenges to adventurers yearning for solitude and natural beauty ...

Around 66 million years ago, a six-mile-wide asteroid hit Earth, triggering the extinction of three-quarters of all living ...

Kristie L. Ebi ([email protected]) is a professor in the Department of Global Health at the University of Washington, in Seattle. Jeremy J. Hess is a professor of environmental and occupational ...

Department of Chemistry, Martin Luther University Halle-Wittenberg, Halle (Saale) D-06099, Germany ...