A new study reveals why ice gets so slippery — and it wasn’t what we expected

The next time you slip on a lick of ice, at least you’ll know the physics behind it!

This generator harvests power from a car’s rolling tires

Some 10% of the energy generated by a car’s engine is lost due to friction between tires and the pavement. What if you could harness this lost energy somehow? A group at the University of Wisconsin-Madison in collaboration with researchers in China have found a ingenious way to collect and use this friction energy by effectively inserting nanogenerators into tires.