Roughly 90% of the hydrogen in the United States is produced using fossil fuels.

Scientists have long wondered about how the potato's genetic lineage came to be. Now they know: The plants are a cross between tomatoes and a plant known as Etuberosum.

What if you could set up some panels in your backyard or hang them off your balcony and start making a dent in your power bill? Organizations are trying to bring "balcony solar" to the U.S.

Dredging waterways for navigation is a centuries-old practice, but this project is controversial because the mud being dug out of the channel is put into other parts of Mobile Bay.

The Mojave Desert tortoise has long been considered a threatened species, but in June, California declared it endangered.

In addition to knowing safety rules — like hiking in groups of three or more, making noise, avoiding trails at dawn and dusk, and securing food trash — hikers need to carry bear spray, one canister per person.

Changing weather patterns and higher temperatures are affecting some of the most prized tea-growing regions in China and Taiwan.

In western Colorado, firefighters are up against windy, hot weather as they try to protect homes and infrastructure from a pair of lightning-caused wildfires.

There are few alternatives to halt the ongoing land loss.

The Trump administration plans to end a $7 billion Biden-era program that helps low-income households get solar power.