Air travel has been the focus of much scrutiny lately due to its devastating effects on the environment. How will the aircraft of the future address this problem?

What sounds like a distant vision of the future is already possible today – at least when it comes to technology. Will quadcopters and "soulless" unmanned aircraft soon be transporting hundreds of passengers over long distances?

Freaked out by the idea of a pilotless plane? How about one without any moving parts at all – no turbines, no propellers? The next generation of aircraft could involve ion propulsion, which allows planes to take off and land anywhere – all without making a sound.

Is your sleep position causing back pain? Watch this video to learn about the best position that compensates for the problems that sitting all day can cause.

“Rosetta,” a space probe launched by the European Space Agency in 2004, took over 12 years to reach her destination: a faraway comet hurtling through space. This animated short retells her epic journey in the form of a fairy tale.

Because they raise so many questions, celestial bodies have always fascinated humankind. Various probes — including Rosetta and her “little brother” Philae — have been sent into space to gather more information. This video presents the probes as courageous and curious figures in a whimsical fairy tale.

Rosetta and Philae were ready for their biggest challenge yet: Philae’s landing on comet 67P/Churyumov-Gerasimenko. When Rosetta said goodbye to her lander and released it onto the comet's surface, the whole world watched in suspense to see what would happen next.

Rosetta tells us about what she learned during her first year studying comet 67P/Churyumov-Gerasimenko — and Philae, asleep on the comet itself, finally wakes up from his hibernation!

In this video, you can see the impressive peaks of the Austrian Alps, along with some of the animals that inhabit them in difficult conditions.

People living in the Alps are also anxiously awaiting spring. The Imster Schemenlauf is a traditional parade to drive out the winter.

As the snow melts in many areas of the mountains, plants and animals alike emerge in the fresh spring air.

In this segment, we follow a badger and a fox family through the beautiful sunlit forests of the alps.

In the spring, birds have to work hard to feed their hungry offspring and keep them safe in beautiful, yet harsh environments.

As spring struggles to break through, blooming flowers may be preserved in ice. Meanwhile, the male grouse tries to attract potential mates.

The segment features more footage of the alpine black grouse, as well as a festival held by the local religious community in the valley of Kals.