Emily Kwong and Regina Barber of NPR's Short Wave talk about a comet visiting from interstellar space, caterpillars that eat and break down plastic, and how animals' sense of smell varies by altitude.

Video shows the dramatic high-altitude helicopter rescue of a solo hiker who suffered a compound ankle fracture at 13,500 feet on a remote mountain in the Eastern Sierra.

For the third consecutive year, the prestigious cycling team chooses the Dolomite valley for the high-altitude preparation of ...

A 14-year-old boy in the US is in a medically induced coma after walking off a 120-foot slope right in front of his father ...

On Sunday night, there will be a long-duration and high-altitude passing of the International Space Station. When and where ...

A photographer who doubles as a pilot was the highest in the Manhattan sky on July 4th -- and The Post obtained his breathtaking aerial photographs of the 49th Annual Macy’s 4th of July ...