Climate change money "a drop in the ocean"

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World leaders at the United Nations conference on climate change in Paris have described global warming as an urgent threat. Developed countries have pledged US$100 billion to help poorer countries like Nigeria cope with the effects of climate change. Nigeria's Environment Minister, Amina Mohamed, says the money promised is a drop in the ocean. (Photo: A Nigerian oil terminal. Credit: Pius Utomi Ekpei / AFP / GETTY IMAGES)