Summary Temperature records topple around the world Sea temperatures also hit record high Climate talks failing to respond to extreme weather emergencies U.S. climate envoy Kerry expected in Beijing in July SINGAPORE, June 30 (Reuters) - The target of keeping long-term global warming within 1.5 degrees Celsius (2.7 Fahrenheit) is moving out of reach, climate experts say, with nations failing to set more ambitious goals despite months of record-breaking heat on land and sea. As envoys gathered in Bonn in early June to prepare for this year's annual climate talks in November, average global surface air temperatures were more than...