Tropical Storm Debby will hit Florida, likely as a hurricane

A tropical depression strengthened into Tropical Storm Debby in the Gulf of Mexico on Saturday. It may reach hurricane strength before hitting Florida Monday.

Help monarch butterflies by planting milkweed

Monarch butterflies are in trouble, facing declining numbers amid habitat loss and pesticide use. But even a small milkweed garden can help them.

May’s solar storm created a new Van Allen belt

May's solar storm added a new ring - a 3rd Van Allen radiation belt - to Earth. This new Van Allen belt might last from months to years.

Komodo dragons have iron-coated teeth

Scientists have discovered that the curved serrated teeth of Komodo dragons are kept sharp by a coating of iron, and have an orange stain from the iron.

Massive ancient volcanic eruption found in Aegean Sea

Researchers have found evidence in the layers of the seafloor of the Aegean Sea for a previously unknown massive volcanic eruption some 520,000 years ago.

Airplane glory: What is it and how to spot one?

An airplane glory is easy to see, if you watch for it. It's the plane's shadow cast on a cloud, or the ground, surrounded by a halo of light.

LIVE on Monday: Climate chaos with Daniel Swain

Climatologist Daniel Swain will discuss climate change and extreme weather LIVE with EarthSky at 12:15 p.m. (17:15 UTC) on Monday, July 29. Join us!

Canada’s Jasper fire: A beautiful place burns, a call for fire strategy

The Jasper fire devastated the Alberta town and ripped through part of the national park. It prompted calls for a strong national wildfire strategy.

Lifeform of the week: Scorpions

Scorpions are arachnids that have strong pincers and venomous stingers. All species are venomous, but their venom can also save lives.

New hottest day, in a record-breaking 12 months

The new record for hottest day in recent history came on July 21, 2024, when the average global surface air temperature hit 62.76 degrees Fahrenheit (17.09 C).