This incredible video proves that helium isn't just a voice-raising gas. In its superfluid state it also defies gravity, has zero friction and can leak through glass.

This might be painful to watch for some viewers, but as tattoos become more popular, you might need this done to you one day.

This video offers up one of the strongest natural hallucinatory illusions we've ever experienced.

"We don't live in a world of reality but a world of perception." Try to read every letter on the screen...

Watch the fastest animal in the world - a peregrine falcon - effortlessly accelerate to speeds of more than 290 km/h to chase a plummeting skydiver.

High-speed video footage has captured for the first time, what researchers say are hundreds of tiny aerosol particles being released from raindrops when they impact with soil.


The mechanical engineers at the Massachusetts Institute of Technology, who observed the aerosol release in action, say it could account for the earthy smell that accompanies rain after a long dry spell.

Source: http://www.sciencealert.com/watch-raindrops-releasing-aerosols-during-slow-motion-impact ...

This lion, named Will, spent his life with a traveling circus in Brazil. "For 13 long years, the lion had been confined to a cramped cage and denied any semblance of a normal existence," the Sao Paulo sanctuary wrote.

This type of optical illusion plays with our brain’s sense of perspective: the dragon’s face looks like it’s sticking out toward us because, after all, we know from a life time of experience that faces stick out instead of cave in.

But the exact opposite is actually the case here. Regardless of what you perceive, the entire face of this dragon is inverted making everything backwards: For example, the right eye is actually farther away from us than the left eye, and it’s this inversion that confuses our brains and makes us think the dragon is staring at us.

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This is Richard Feynman's take on a simple question, why do magnets repel each other?

A little more on Richard Feynman. He was an American theoretical physicist known for his work in the path integral formulation of quantum mechanics, the theory of quantum electrodynamics, and the physics of the superfluidity of supercooled liquid helium, as well as in particle physics for which he proposed the parton model.

As always: A scientist is not a person who gives the right answers, but one who asks the right questions. ...