A look at how El Niño influences global weather patterns.
Even with the big swings of Halloween weather from year to year, Octobers are warming across the U.S.
The relentless heat that has plagued the western half of the country this summer has ratcheted up California’s terrible drought once again.
Record lows are outpacing record highs since last year. This is becoming rarer in a warming world.
The Power Dissipation Index for hurricanes has been on the rise since 1970, along with sea surface temperatures.
The probability of a tornado touchdown somewhere in the U.S. jumps to nearly 80 percent in May and nearly 90 percent in June.
Climate change has increased pollen counts and the length of the pollen season, trends that are expected to continue through mid-century.
If global warming continues unabated, only 6 of the 19 previous host cities could host the Winter Games again by the 2080s.