Two heat waves an ocean apart are inextricably linked.
Why it matters: These kinds of interconnected heat waves could become even more extreme in the future, as human-caused climate change affects the jet stream winds responsible for them.
Lake Mead's water levels have sunk to the lowest since 1937, when the reservoir was being filled for the first time, according to newly released satellite pictures from NASA.
Why it matters: The images show the dramatic change in the lake's water levels in the past 22 years, a trend that continues to accelerate amid the effects of climate change. Lake Mead, the largest reservoir in the U.S., was at 27% of capacity as of Monday, per NASA. The dwindling water supply has led to multiple wildfires.
