The rechargeable cooking tool, designed by a Cameroonian engineer, is powered by waste vehicle oil and solar energy ...

In December, Ukrainian drones targeted oil depots and refineries in Smolensk, Oryol, Bryansk, and Rostov — an area that had previously been targeted in July. The General Staff of Ukraine’s Armed ...

The Chinese AI company roiled financial markets and showed the road to growth in electricity demand may be bumpy.