A swan sits at the center of a perfectly circular lake. At an edge of the lake stands a ravenous monster waiting to devour the swan. The monster can not enter the water, but it will run around the circumference of the lake to try to catch the swan as soon as it reaches the shore. The monster moves at 4 times the speed of the swan, and it will always move in the direction along the shore that brings it closer to the swan the quickest. Both the swan and the the monster can change directions in an instant.
The swan knows that if it can reach the lake's shore without the monster right on top of it, it can instantly escape into the surrounding forest.

How can the swan successfully escape?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Which is heavier: a ton of bricks or a ton of feathers?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?

Why do people go to bed?

Look at the picture and find out which square is not linked with any of the other squares.

My sock drawer has 26 blue socks, 13 pink socks, 33 green socks, and 12 red socks, how many socks would I have to pull out in the dark to be sure I had a matching pair?

Which is the smallest number that you can write using all the vowels exactly once?