Lost in the woods near a stream, with some empty water bottles, wire, plastic plates, and a stepper motor, *and* you need to charge your smartphone? Try this. OK, so perhaps you wouldn't ever be ...

This video showcases a mini construction project focused on building a hydroelectric dam for a science project. It highlights the process, techniques, and materials used in the construction.

If you buy something using links in our stories, we may earn a commission. Learn more. This summer libraries around the country will be hosting activities in keeping with this year’s theme kids’ ...