Climate campaigners urge action Thousands of climate change campaigners attended a rally in London on Saturday, calling for world leaders to act urgently on the issue.

• 伦敦集会游行者呼吁各国对气候变化采取行动上周六,数万名民众聚集在伦敦,呼吁各国领袖采取紧急措施来抗击气候变化。