One Direction split up because they didn't want to move in one direction...

Stationery

If you ask people the following question:

"A pen and a pencil together cost £1.10 and the pen costs £1 more than the pencil, how much does the pencil cost?"

more than 90% of people will give you the wrong answer of 10p.

Bones

The skeleton you have now will be completely different to the one you will have in 10 years time, because skeletons renew every 10 years.

The Weight of Knowledge

A fully loaded Kindle is heavier than a Kindle with no books loaded on it (by around a billionth of a billionth of a gram).

Absolute Zero

Nothing can ever be colder than

-273 degrees Celcius.

Why should you trust your calculator?

Because you can always count on it.

Palindromes

1001 and 34843

are both examples of palindromic numbers.

'Was it a car or a cat I saw?'

and

'Oozy rat in a sanitary zoo'

are both examples of palindromic sentences.

Act Your Age

If someone tells you to act your age it seems reasonable to tell them that it's difficult to do this because you've never been exactly this old before.

Elemental!

Earth's atmosphere is mainly...Nitrogen (78%).