Rainbows form when raindrops refract sunlight into a spectrum of colors. The brighter the sun, the clearer the rainbow.

Hawaii’s sunshine, short rain showers and clean air together create some of the planet's best conditions for viewing rainbows ...

The Commerce Department has sent NOAA officials a broad set of keywords to search grants in ways that would cover most ...

Cleaner air's impact requires a steeper reduction in human-emitted methane to meet global targets. A new study reveals that ...

"We're at solar maximum; to find time to make some of these big changes is going to require time and more resources, so we ...

The rival farmer almanacs have released their national spring weather forecasts. And they disagree, especially about Illinois. The Old Farmer's Almanac predicts a dry spring for the Prairie State, ...

A strong, stable vortex is like a skater spinning with their arms tucked closely in, holding in an area of cold air over the Arctic. But when there’s a wobble in the rotation, winds in the vortex can ...

Julianne Fernandez parlayed her experience as a University of Cincinnati geosciences student into a career that has taken her ...

Human activities continue to pump billions of tons of carbon dioxide into the atmosphere each year, raising global ...

Traditional cooling systems for buildings use refrigerants and electricity, which contribute to the atmospheric greenhouse ...

A recent study published in One Earth presents strong evidence indicating that the climate impact of newly formed particles ...