Scientists detected the gravitational waves after a pair of unusual black holes collided.
Nearly a year after the earthquake and tsunami devastated Japan, foreign journalists have been allowed into the crippled Fukushima nuclear plant.
Deep inside the exclusion zone, some 3,000 people are working around the clock to make the plant safe again. The BBC’s Roland Buerk donned the necessary protective clothing and went inside.
Robin Young and Jeremy Hobson are hitting the road. Our Tumblr brings you behind the scenes of our election coverage.