Helium can work against gravity

Helium can work against gravity

When liquid helium is cooled to extreme temperatures, just a few degrees away from its boiling point (-460 degrees Fahrenheit), it turns into a superfluid, meaning it can flow without friction, Scientific American reports. It can climb up and over the sides of a glass, and it can leak through molecule-thin cracks in a container.

Another interesting science fact about helium: While it’s the second most abundant element in the universe, it can be harmful to the human body, according to an article in the journal Injury Prevention. So as funny as it may be to suck down some helium and hear your high-pitched voice, it’s best to keep birthday balloons out of your mouth.

About half of your body’s cells are bacteria

 

About half of your body’s cells are bacteria

Experts estimate that the human body consists of 39 trillion bacteria and 30 trillion human cells—a roughly 1:1.3 ratio. But because bacteria are so small, they make up about only 1% to 3% of our body mass. In the past, researchers thought we were much more bacteria than human, with a ratio of 10:1.

Humans are capable of producing venom

Humans are capable of producing venom

Did you know we’re closer to cobras than you might think? Believe it or not, while humans do not currently produce venom, technically, we could. In fact, all reptiles and mammals have that capability.