Hiiiiyyyy Judith, (insert a weak wave of the wrist here)i, here's a worrying revelation.......if we all faced West and ran a hundred metres suddenly, all at once, we'd either increase or decrease the Earth's rotation by a few metres per hour, whatever............(edit) just did a quick calculation, I have an app on my IPAD, and worked out that as the Sun rises in the East it means the Earth is moving towards you if you faced West, so if you faced West and we all ran like the clappers, it would speed up the rotation.
I got that idea watching one of those Japanese late night fun game shows where people dress up in funny clothes and do strange things trying to get to a "winning" post first....lots of water involved......in that show there was a big inflated ball and the nutters had to stand on top of it and walk it to the winning post while falling in the water.
If it works it means we'd get daylight shortening or lengthening if we ran to the East.....if you can tell how much it affects the effect of a long day or night, write a white paper and present it to the Flat Earth society to debate (peer reviewing?) on for a couple of hundred years.....they like that sort of thing.
We may not be able to control the weather but we now can control the Earth's rotation which could affect the weather.....LOL.
Shortly after the Boston marathon we had a longer day by a few milliseconds....but no one noticed it due to the counter effects of the blast shortly afterwards.
But it only works if you are wearing Niikeeeee running shoes, to get a better grip against the Earth's rotation....LOL....time for the pills.....zzzzz.
Ian.