In this 2015 photo, a kayaker paddles along in Lake Tahoe, on the border of California and Nevada. A study says the average surface temperature of Lake Tahoe has risen faster over the past four years than any time on record.
In this 2015 photo, a kayaker paddles along in Lake Tahoe, on the border of California and Nevada. A study says the average surface temperature of Lake Tahoe has risen faster over the past four years than any time on record. Rich Pedroncelli Associated Press
In this 2015 photo, a kayaker paddles along in Lake Tahoe, on the border of California and Nevada. A study says the average surface temperature of Lake Tahoe has risen faster over the past four years than any time on record. Rich Pedroncelli Associated Press