Subtropical Storm Don forms far out in Atlantic Ocean

Subtropical Storm Don has sustained winds of 40 mph with higher gusts, but is far from any shore.

Despite heat wave, people are flocking to the hottest place on Earth

Temperatures in the largest national park in the Lower 48 states are expected to intensify over the weekend, potentially setting new records amid a major U.S. heat wave.

Man drowns at home in Vermont's 1st recorded flooding death

The 63-year-old man's death was the second flood-related death related to a storm system and heavy flooding in the Northeast this week. The first occurred in New York when a woman died after being swept away during a flood.

Several cities have heat emergency plans. Are they enough in a warming world?

Natural disasters can be dramatic — barreling hurricanes, building-toppling tornadoes — but heat is more deadly. Many cities are beginning to plan a response to the looming dangerous heat.

Summer heat is the 'No. 1 weather-related killer,' doctor warns

States in the Southwest and West have been under Excessive Heat Warnings and heat advisories for the past two weeks

Earth sees hottest day on record for third straight day

The daily highs are an indication that climate change is reaching uncharted territory, scientists say.

How is air quality measured?

As smoky air from Canada’s wildfires shrouds broad swaths of the U.S., here are seven facts you should know about measuring air quality.

Watch: Tornado rips through Indiana apartment complex

Deaths have been reported in Indiana and Georgia after severe weather, including tornadoes, tore paths of destruction from the Midwest to the South on Sunday, leaving more than a half-million people without power.

El Nino blamed for recent bird deaths along Mexico's Pacific coast

Many seabirds in this region died recently, with more than 90% of the affected birds being grey-backed shearwaters, according to the Ministry of Agriculture and Rural Development in Mexico.

Invest 92L has high chance of tropical development as it spins across the Atlantic

Forecasters have been closely monitoring a disturbance, known as a tropical wave, which entered the ocean from Africa last week and has been given a high chance of tropical development.