Mike Henry has a two-hectare farm in Palmer, Alaska. About a year and a half ago, his goat Millie was giving him a hard time. She did not want to be milked.

She kicked her back legs and stepped into the bucket that was supposed to catch her milk. But there was no milk to catch. All Mike Henry got was tired hands from his attempts to milk her.

But he also got an idea. He designed a goat milking machine that does not require any electricity or motors. The Henry Milker is a hand-operated vacuum pump. A person attaches a tube to the goat and, after a little pumping, the milk begins to flow. A gauge measures the pressure of the suction.