life's little mysteries

Outer space has a particular stench. But why?

Humans will likely die long before our planet does.

Why does ice float in water, instead of sinking to the bottom? It has to do with water's density and molecular structure.

The inability to remember your first few years of life is called infantile amnesia. But why does it happen?

What is the largest snowflake ever recorded?

Scientists explain why animals in Australia wield venom as a weapon.

If Alexander the Great had invaded Rome, would he have won?

There are infinitely many prime numbers, but the biggest one we know of goes by the name M82589933 and contains more than 24 million digits.

The length of a second depends on how you're measuring it.

Why are dogs, especially puppies, in endless pursuit of their tails?