10+ hour, 47+ min ago   (632+ words) "The city is running a race where the finish line, clean air, is receding farther and farther." Mexico City's efforts to clean up the air have led to several measurable improvements. Ground-level ozone, however, has been stubborn. Researchers say the…...

10+ hour, 23+ min ago   (475+ words) "This El Niño that we're dealing with is likely going to be the strongest on record we've seen since we started keeping records." A powerful El Niño is giving global temperatures an extra boost, and one meteorologist predicts it will…...

10+ hour, 35+ min ago   (709+ words) Some of the highest heat-index readings were seen in Central and South Central L.A. Southern California humidity hits an all-time high after 46 years, putting a question mark on the state's trademark "dry heat." A spell of unusual moisture has driven humidity…...

1+ day, 6+ hour ago   (399+ words) From orbit, the haze nearly matched the color of the desert below. A striking NASA satellite image captured a massive dust plume stretching across Mali and pushing west toward the Atlantic Ocean as West Africa's busiest dust season began to…...

1+ day, 3+ hour ago   (453+ words) Florida International University's "Wall of Wind" is set for a major expansion after receiving a $15 million donation, giving one of the country's most powerful hurricane research tools a significant boost. The funding will help build a next-generation version of the…...

22+ hour, 26+ min ago   (621+ words) "I don't think we have seen anything like this ever here in Indiantown." After heavy rain hit Indiantown, Florida, some residents said their streets looked more like swimming pools than roads. Floodwater spread across neighborhoods, submerging roadways, entering homes and…...

3+ day, 12+ hour ago   (578+ words) "Subtle, immature faults may pose a greater seismic hazard than the prominent, large faults that we traditionally focus on." A rare jolt hit New Jersey in April when a magnitude 4.8 earthquake sent tremors across the East Coast, startling millions. Researchers…...

3+ day, 5+ hour ago   (485+ words) Southern California is pushing through another day of sweltering temperatures and unusually humid air amid a stretch that has sent readings into record territory, battered the coastline, and put pressure on schools. A cooldown is expected by Friday, but forecasters…...

3+ day, 7+ hour ago   (370+ words) Completed Phase I work from 2024 serves as the foundation for this next stage. Miami-Dade residents have a chance to weigh in on a federal plan meant to reduce storm-surge threats in some of the county's most exposed coastal areas. A…...

3+ day, 13+ hour ago   (625+ words) Rising temperatures and their effects are changing summer in intimate, emotional ways. Summer still carries many of the expectations Americans have long associated with the season: beach days, backyard cookouts, lightning bugs at dusk, and the relief of mountain air....