Most technology has been getting faster, smaller, and cheaper, every year. Everything except batteries.
This is not just a problem for the iPhone 6 Plus owners of the world. It's holding back two of the biggest technological revolutions in the world: electric cars and solar power. A better, cheaper battery could save the world.
Today on the show, we find out why battery technology is stuck, and meet some of the people trying to make them better.
Jabbercast