Doing what he does best, Bill Hammack, AKA The Engineer Guy, spends an enlightening 13 minutes explaining not only how two-liter plastic soda bottles are made, but also how their seemingly simple ...

The power of the sun is harnessed using a bottle full of water. Quite simply they’re used 2-liter soda bottles. They’ve been filled with water along with two caps worth of bleach to keep ...

A capped 2-liter plastic bottle containing a clear, colorless liquid is shaken. The liquid turns a deep blue color. At rest, the liquid returns to colorless. The cycle can be repeated many times. Ask ...