Temperatures approaching the century mark amid the hottest weather yet this year will challenge records in many places that date back to the late 1800s and early 1900s Friday into at least Memorial Day.
Memorial Day marks the unofficial start to summer, but the weather for this holiday weekend won't feel like it in parts of the western United States.
After severe weather outbreaks hammered areas from Texas to Kansas and Missouri earlier this week, more severe weather and flooding will threaten these same areas into the Memorial Day holiday weekend.
Regardless of development, a tropical low will bring flooding rainfall to Central America through the start of the coming week.
As AAA expects nearly 43 million Americans to travel this Memorial Day holiday weekend, up 3.6 percent from last year, stormy weather will create trouble for some areas. Meanwhile, summerlike heat will prevail in other areas of the country.
Researchers have found a way to measure the carbon released into Arctic rivers by thawing permafrost.
Sea level rise is hitting coastal habitats along the south Atlantic Coast faster than scientists previously thought, threatening entire species of birds and whole ecosystems if action isn't taken soon.