6 May 2014 Last updated at 08:53 ET
Warming 'increasingly disruptive' across US - report
Climate change is having significant financial, ecological and human health impacts across the US according to a new report.
The third National Climate Assessment, released by the White House, says the number and strength of extreme weather events have increased over the past 50 years.
Infrastructure is being damaged by sea level rise, downpours and extreme heat.
The report says these impacts are likely to worsen in the coming decades.
The study, compiled by hundreds of scientists, is set to guide President Barack Obama's action on climate in his last two years in office.
The assessment warns that current efforts to implement emissions cuts and to adapt to changes are "insufficient to avoid increasingly negative social, environmental, and economic consequences".
According to the White House, climate and weather disasters cost the US more than $100bn in 2012, the country's warmest year on record.
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