With the BBC's new online feature, Your Life on Earth, you plug in when you were born and it spits out all sorts of facts about how the world has changed since you were born. Here are some of mine:
Population has increased by 3,324,602,171 since you were born (currently 7.24 billion)
A coast redwood's growth in your lifetime: 52'10"
Travelled 24.1 billion miles around the Sun
Global life expectancy has increased by 10.1 years since you were born
I am 170 years old on Mercury