If you've ever looked up at the sky and seen an airliner flying overhead, you may have noticed white trails behind it.

(WHTM) — You may have looked up into the sky during a clear, blue day and noticed long, thin clouds stretching for miles. You also may have seen airplanes flying with two thin cloud trails behind them ...

Unless you live far out in the middle of nowhere, away from any flight paths, you will surely have noticed that planes and jets leave behind white trails, and the reason why planes and jets leave ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. If you’ve ever looked up at a mostly blue sky and seen straight ...

Science made possible for 1 million pound machines to fly.

The Northern Lights, also known as Aurora Borealis, are undoubtedly one of the most gorgeous phenomena in the sky. Gazing at ...