Excavations of an ancient construction site in Pompeii have revealed the process of how Romans mixed their self-healing concrete.

A few weeks before the fall of her hometown to Sudan’s paramilitary group, Nadra Mohamed Ahmed, seven months pregnant at the time, trekked for nearly 40 kilometers (25 miles) across unsafe roads, along with her two children, until she found safe transportation to a shelter across the country. Ahmed arrived in the camp two months before el-Fasher in West Darfur was seized by the paramilitary Rapid Support Forces, or RSF, which have been battling Sudan’s army for more than two years. The U.N. po

The electric vehicle (EV) market is extending quickly, with additional models opening up every year at diminishing costs. The