The US has spent billions building a “virtual wall” of surveillance towers along its southern border over the past 25 years, promising they will help detect and apprehend border crossers and save lives. But a groundbreaking investigation by MIT Technology Review has documented hundreds of people who moved through areas watched by these towers without…
Helion’s Polaris device hit 150 million degrees C recently, a milestone that nudges the company toward its commercial power plant that will sell electricity to Microsoft.