HumansThe Galapagos of the Indian Ocean: Voyage to a forgotten paradise Celebrated for their biodiversity, the islands of Socotra could unlock secrets of humans' journey out of Africa – but war and weather hamper the journey there Features
PhysicsExclusive: Grave doubts over LIGO's discovery of gravitational waves The news we had finally found ripples in space-time reverberated around the world in 2015. Now it seems they might have been an illusion Features