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10,238,259 results
In this video, I demonstrate a way to start your car (when the battery is dead) without pushing it or using jumper cables. That's why ...
6,787,752 views
7 years ago
This is a battery made of sand. It's 23 feet tall, filled with 100 tons of sand, and could be one solution to energy storage. Here's why ...
6,897,496 views
1 year ago