Guardian: London is less vulnerable to rising sea levels caused by global warming than experts realised, according to a new analysis. Experts at the Environment Agency said the Thames Barrier will protect the city for decades longer than engineers thought, with a six-year study revealing that the barrier’s original designs overestimated the threat from climate change. Rather than becoming obsolete by 2030, as its designers thought, the barrier will not need to be replaced until 2070, the …