Warm weather out West has pushed the Lower 48 to its second warmest January through April on record.
Global warming is reducing oxygen supplies for marine wildlife along the West Coast and elsewhere.
One of the strongest El Niño's on record has had some major drought-busting benefits in northern California.
Analysis finds a decrease in the percent of precip falling as snow in winter months for every region of the U.S.
Tens of millions of Americans are losing water because of warming's effects on Colorado River.
Persistent high pressure ridges like those during California's driest years are becoming more common.
An exceptionally strong El Niño has tampered with the world’s weather, bringing drought, floods and heat waves.
The combination of coastal population growth and sea level rise could flood millions of homes by 2100.