Aerogel, also known as frozen smoke, is world's lowest density solid, clocking in at 96% air. If you hold it in your hand, it's practically impossible to see it or feel it, but when you poke it’s styrofoam. The amazing thing is that it can hold up to 4000 times ita own weight and can withstand a direct blast from 2 pounds of dynamite. It is also the best insulator in existence.
If an alien, 65 million light years away is looking at us through a telescope right now, he'll be looking at dinosaurs.

People tend sneeze in threes because one loosens up the irritant, the second brings it to the front of the nose, and the third gets it out.
There are more atoms in a grain of sand than the grains of sand on earth.
Nobody knows who named our planet “earth”.
An iPhone has almost 75 elements in it, that is, two- third of the periodic table.
You have never seen your face in person. Just reflections and photographs.
A stinging tree called Gympie Gympie secretes toxins so painful that it has led humans and animals to suicide. It feels like being burnt with hot acid and being electrocuted simultaneously. A man commited suicide after using a leaf from this tree as a substitute for toilet paper.
Now Breathe. Why are you breathing through your mouth? Do you know breathing through the mouth can, over time, create a shrinking of the jaw – hence resulting in crooked teeth (or a relapse after having your braces removed)?
Now you do.
Source - Pinterest