Western Canada's heat wave is 'unprecedented.' Scientists say it will become more common with climate change

There's going to continue being new normals until we stop emitting greenhouse gases,' says climate scientist

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The shocking numbers behind the Lake Mead drought crisis

(CNN)The United States' largest reservoir is draining rapidly. Plagued by extreme, climate change-fueled drought and increasing demand for water, Lake Mead on Wednesday registered its lowest level on record since the reservoir was filled in the 1930s.

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