EnvironmentShould Japan dump Fukushima's radioactive water into the ocean? The International Atomic Energy Agency has approved Japan's plan to release radioactive water from the Fukushima Daiichi nuclear power plant into the ocean, but some researchers question this approach Analysis
TechnologySolar panel cleaning robot can be dropped off and picked up by drone Dirty solar panels reduce global solar energy output as much as 5 per cent, but a start-up in Israel has tested drone delivery of a new autonomous robot to clean rooftop arrays News