The area near clouds is often classified as ‘clear sky’, but a new study demonstrates the potential biases of misclassifying ...

The Army was one of 28 government agencies authorized to fly helicopters near Ronald Reagan National Airport before its Black ...

A dramatic reduction in sulfur pollution from shipping has unintentionally contributed to recent global warming, offering a ...

Islands in the Sky will feature botanical gardens suspended from the air and cascading pools filled with restorative waters ...

Mystical Marbles at New Zealand's Moeraki Boulders Nestled along New Zealand's Otago coast, the Moeraki Boulders resemble a ...

Only a few expedition cruise companies offer trips with an opportunity to ski in Antarctica. Here's what it's like to see a ...

The moon's ascending node (the point in the sky where its orbit crosses the ecliptic from south to north) is moving westward ...