Explore the best experiences to have in U.S. national parks across this sprawling mountain range, from stunning hikes to wildlife encounters.

"The successful SCALPSS operation is a key step in gathering fundamental knowledge about landing and operating on the moon, ...

U.S. bird populations are experiencing alarming declines due to factors such as habitat loss and climate change, according to ...

Scientists checked in on species all over the country for the latest State of the Birds report. Nearly everywhere they looked, birds were struggling—including some that have been resilient in ...

A new report says at least 112 North American bird species have lost more than half their populations in the past 50 years.