"I really wanted to keep this system as passive as possible." ...

A hydraulic ram is a clever device invented over 200 years ago that can pump water uphill with no other external source of power except for the water flowing into it and there is a way to take ...

Despite the claims of “free energy” on the title of the video below, this is not yet another wacky perpetual motion story. We here at Hackaday fully support the laws of thermodynamics, and we think ...

Imagine you have a natural stream running through a low-lying area on your farm. It’s a great source of fresh water, only you really need it to irrigate some crops sitting at a higher elevation. The ...

A ram pump, installed in mountainous Philippine villages by an award-winning NGO, is providing a plentiful supply of water for crops and sanitation “If water comes out of that pipe, I’ll chop my thumb ...