I'm not really fussed whether or not you post something interesting of your own after this post. But to me this is such a mind blown piece of info that I wanted to share it. As far as I am aware the following fact is true since it was on a BBC documentary about water. Though I don't remember what it was called.
10,000 cubic Kilometers of water is now held in the worlds reservoirs. The majority of these reservoirs and therefore the water is mostly contained in the industrialized Northern Hemisphere. This has caused a shift in weight distribution on the Earth which has had the effect of increasing the speed of the Earths rotation. The end result being that in the last 40 years the day has been shortened by 8 millionths of a second.