Iceland has stood apart from the rest of Europe. But President Trump’s threats to Greenland have provoked a reconsideration. By Amelia Nierenberg and Sergey Ponomarev Aspects such as drone technology ...

While global warming is still a threat, the decision to back away from a worst-case outlook raises questions about whether some risks have been overstated. By Brad Plumer and Eric Niiler An overhaul ...