Rich countries pledged to find $100bn a year by 2020, but so far only Germany has made a significant contribution
Barack Obama will not be pledging any cash to a near-empty fund for poor countries at a United Nations summit on climate change next week, the UN special climate change envoy said on Friday.
The UN secretary general, Ban Ki-moon, has challenged the 125 world leaders attending the 23 September summit to make bold pledges to the fund, intended to help poor countries cope with climate change.
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