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 ...

One two-liter soda bottle = 4-1/2-lbs. water or 6-3/4-lbs. sand. One gallon milk bottle = 8-1/3-lbs. water or 12-3/4-lbs.