brainzlol

When water turns to ice it expands by approx 9%. This expansion does exert a very large force...don't know how much? Can an engine be made to use this force? The motor needs to amplify the small/slow "travel", at the expense of the large force. I know we have to spend energy to cool the water, (but we then dump the ice, not reheat it) Any ideas please? Thanks brainzlol (on twitter)

Does the moon have a pulling effect on a big object, like a building? I know it attracts the sea to make tides. What if a skyscraper was built on pistons? Would the moon pull and rease the building, thereby moving the pistons to create energy? Thanks. url removed