China has been the world's biggest emitter of greenhouse gases stoking global warming since 2007.
Earth is likely to reach more dangerous levels of warming even sooner if the US retreats from its pledge to cut carbon dioxide pollution.
When researchers traveled to a tiny, uninhabited island in the middle of the Pacific Ocean, they were astonished to find an estimated 38 million pieces of trash washed up on the beaches.
A species belonging to the human family tree whose remnants were first discovered in a South African cave in 2013 lived several hundred thousand years ago.
A beach that was swept away more than 30 years ago from a remote island off the west coast of Ireland has reappeared after thousands of tons of sand were deposited on top of the rocky coastline.
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