Join fellow Washingtonians to clean up parks and waterways, or learn about recycling and gardening at family-friendly festivals.

Learn how to improve your garden soil for new plants, whether you have clay or sandy soil, are using raised beds or other long-term methods.

Kids, especially preschoolers, will enjoy these simple, creative Earth Day crafts to learn more about the planet. Many can ...

London’s Museum of Edible Earth invites visitors to taste soil from around the world, exploring the ancient practice of ...

Calhan itself is a small, quiet town with a distinctly rural Colorado character. There is not a long Main Street packed with ...

Add Yahoo as a preferred source to see more of our stories on Google. The Milky Way galaxy has more than 400 billion stars in it. Over the last few decades, astronomers have discovered that almost ...

Paintings and other museum collection objects are sensitive to heat, humidity and sudden shifts in temperature — that's why ...

Whenever humans arrive on Mars, they're going to find it a difficult place to exist. Mars is cold, with an average surface ...

Planets orbiting stars beyond the solar system come in all shapes and sizes but mostly fit into a few categories: large and hot gas giants, super-Earths that are slightly larger than our planet, ...

For a group of people whose ages range from 18 to 29, the finalists were very poised this year, as if they had been doing ...

WASHINGTON (AP) — President Donald Trump’s search for an off-ramp from the war with Iran is getting bumpy inside his ...

The Fantastic Four fought a strange mix of characters in the beginning, and here are their first 10 villains ranked by power.