A series of climate records on temperature, ocean heat, and Antarctic sea ice have alarmed some scientists who say their speed and timing is unprecedented. Dangerous heatwaves in Europe could break further records, the UN says. It is hard to immediately link these events to climate change because weather - and oceans - are so complex. Studies are under way, but scientists already fear some worst-case scenarios are unfolding. "I'm not aware of a similar period when all parts of the climate system were in record-breaking or abnormal territory," Thomas Smith, an environmental geographer at London School of Economics, says....