Within days, even before I knew about the multistory glass office building destined to occupy that block, my find had been reduced to a pile of rubble.

Insulating glass is not only block cold and hot, but also can isolate noises, which greatly decrease the energy-cost for keeping temperature inside the building.

Similarly, while it is easy to start the day with a glass of orange juice, a handful of papaya contains 15 times more beta-cryptoxanthin - another vitamin A building block.