Climate-related disasters killed 21,000 people in the first nine months of this year, more than double the number in 2009, the humanitarian organization Oxfam reported yesterday.

Timed to coincide with the start of international talks tackling climate change in Cancun, Mexico, the report cited floods in Pakistan and fires and heat waves in Russia as examples of the deadly consequences of climate change.

The new round of U.N. climate negotiations aims to agree on issues of funding, preservation of rainforests and preparations for a warmer world. The talks also seek to formalize existing targets to curb greenhouse gas emissions.

Last year’s climate negotiations in Copenhagen ended with no binding global agreement, and expectations for this year’s talks are low.