Engineers have been building the zipper for more than 22 years.

Science and facts💡

A blue whale's tongue weighs more than a few elephants.

Science and facts💡

Raw pistachios can spontaneously combust if stored in large quantities.

Science and facts💡

Ophthophobia is a fear of looking "eye to eye".

Science and facts💡

Google earns about $700 per second.

Science and facts💡

The living thing that kills the most people every year is mosquitoes.

Science and facts💡

Lions sleep up to 20 hours a day.

Science and facts💡

The grasshopper has hearing holes in its hind legs.

Science and facts💡

If a person smells unpleasant odors while sleeping, he or she is having negative dreams.

Science and facts💡

Scientists still do not reliably know why zebras became striped during evolution.

Science and facts💡

Smart kids are more likely to become alcoholics.

Science and facts💡

Because of the pressure on board the plane, the sense of smell and taste is reduced by 30%.

Science and facts💡

Every kilogram of extra fat gained causes the body to create 22 kilometers of new blood vessels.

Science and facts💡

Every night we unknowingly wake up up up up to 15 times.

Science and facts💡

The orange outer part of the orange rind is called the flavedo.

Science and facts💡

Over the course of a day, the volume of a person's foot can change by 18%.

Science and facts💡

The 25% of India's population with the highest IQ is more than the entire U.S. population.

Science and facts💡

Bird feathers weigh more than their skeleton.

Science and facts💡

If all human red blood cells were stacked side by side, you would get a ribbon that would circle the globe three times around the equator.

Science and facts💡

The goldfish has a memory of three seconds.

Science and facts💡

The dog perceives the master as the leader of the pack.

Science and facts💡