The lion is, without question, the king of the animal world: In Africa, there is no animal as majestic and graceful... or as dangerous! But when a pack of lions encounters an injured sandfox cub, a certain protective instinct kicks in – which is the basis of the true story depicted in this heartwarming video.

The CERN [European Organization for Nuclear Research] is the largest particle physics laboratory in the world. Scientists from all over the world work together here and try to find answers to the questions about the secrets of our universe.

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.

Humans and animals often form their own special kinds of bonds. Here, you’ll learn about people who developed friendships with a crow, a shark, a goose, and more!

Can you imagine having a raccoon as a pet, a tiger as a playmate, or a crocodile as a friend for life? What about a reunion with a lioness? Watch this video for more accounts of wild animals who have formed bonds with people.

We imagine to sharks to be big, scary, and full of serrated teeth – but some species are actually harmless! Learn more about the friendly giants in this video.

Dolphins, sea lions, and beluga whales – which marine mammals are the friendliest?

More friendly marine animals! Here, we meet the charismatic mola mola, the cute but often aggressive sea otter, and the pack-oriented orca.

What are the top three friendliest sea creatures? We won’t give the answer away, but you can find out more in this video!

German summers are getting hotter and hotter — but the Environmental Agency in the small city of Giessen, in the state of Hesse, has come up with an innovative tool for helping residents keep cool: a special city map! Copyright: Deutsche Presse Agentur [The German Press Agency]

The path into the mountains may often but rocky, but don’t miss out on visiting the city of Chur! See Switzerland’s oldest town: Chur is the highlight of the valley!

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.

In this video, pain specialist Roland Liebscher-Bracht demonstrates three effective exercises for lower back pain.