There is a reason why it’s easier to roll marbles down rather than up a hill. And the answer (to this and to gravity itself) is all about acceleration.
A single colony of bees can have 60,000 bees in it. Together, they can visit up to 50 million flowers each day to collect pollen and nectar. They’re not called ‘busy bees’ for nothing!
Some rainstorms drench you in a second, while others drop rain in a nice peaceful drizzle. A meteorologist explains how rainstorms can be so different.
The oldest known skeleton of our species Homo sapiens is about 300,000 years old. But there was a time when humans didn’t exist at all and the world was covered in nothing but slime.
Having longer top eyelashes can enhance our ability to express our feelings and communicate with others. But the most significant reason we have them is to protect our eyes.
There are two types of time travel: going back in time and going forward in time. And remarkably, people can feel time at different rates - but usually don’t notice it.
The distance between the ISS and Earth is the same as about 3,850 football fields. To bring the station down, rockets will lower it a bit, and then gravity will send it crashing the rest of the way.
Boogers, snot, bogeys and boogies are the common names for mucus that’s dried in your nose. Mucus is very important as it protects the body from getting sick.