I'm going to ease back into it gently with this awesome picture from Nasa's very cool 'picture of the day' site. which shows what would happen if all the water on earth were bunched up into a ball. Amazing, right? Because while 70% of the earth's surface is covered in water, it's only a shallow layer compared to the earth's radius. So next time you're watering the lawn remember that there isn't really that much to go around!
I know few of you are probably nerdy enough to actually visit this regularly but it is an awesome site. Go take a look. Now. Off you go...
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