The C600 is a heavy-lift cargo drone with a 150-kg (330-lb.) payload and range of 400 km (250 mi.). Credit: ARC Aerosystems UK startup ARC Aerosystems has put its C600 heavy-lift hybrid-electric ...

Mount Everest looks more like a landfill every year as crowds of adventurous climbers flock to its slopes. Visitors have left an estimated 50 metric tons of waste on Everest. The mountain is so ...