The US has pledged to tackle climate change by cutting its carbon emissions 26-28% by 2025.
It made the formal offer to the UN as a step towards a global deal in Paris in December. The EU has already promised to cut its emissions by a roughly similar proportion.
Tuesday was the deadline for wealthy nations to make their offers – but some, such as Canada, have failed to submit in time.
The announcement was made on Twitter with the words: "America is taking steps to #ActOnClimate, and the world is joining us" - accompanied by a picture of the President in China.



How do you calculate the human costs of the U.S.-led War on Terror?
Speaking by phone, Anthony Fabrizio was on a roll about his career in cannabis research when he suddenly fell silent. You could hear the San Francisco–based research director stammering, then grunting. Silence again.
The Burmese slaves sat on the floor and stared through the rusty bars of their locked cage, hidden on a tiny tropical island thousands of miles from home.
On the morning of Sept. 23, 2014, Caroline Giada woke up in her home in coastal New Jersey. She rose from bed, walked over to the bathroom and fainted, hitting her back on the sink cabinet on the way down. When she came to, she couldn’t move. So she called 911. 





























