I recently read the The World Without Us, by Alan Weisman. He writes about what would happen to the planet if humans vanished (he offers rapture, disease and other scenarios for the disappearance). For example, he details how long the island of Manhattan would take to return to wilderness, how long it would take for tamed rivers to un-dam themselves and recreate wetlands, and how long beachfront properties would last.

The chapter that I can’t stop thinking about has to do with plastics. It is unknown how long plastic takes to return to the earth in a natural form. I cringe when I see “disposable” items made from plastic. Plastic is not disposable. It never, ever goes away. Not even “biodegradable” plastic, it just breaks down into smaller pieces.

I’ve been ruminating that not-recycling plastic is not only environmentally disastrous, but poor foresight. Plastic is essentially a nonrenewable and super useful resource. I envision a future of high-paid trash pickers unearthing old landfills in search of long-buried recyclable plastics.

Additionally: Your Stuff: It Isn't Grown, It Must Be Mined

. . . ultimately, one day our industrial economy will be made up entirely of recycled and biologically grown material. That day, however, may be a long way off. How do we get there, and what is the world of mining like today? How rapidly are we depleting the minerals we have, and how do we get to sustainable mining?

To maintain our standard of living, each person in the United States requires over 48,000 pounds of minerals each year:

* 12,428 lb. of stone
* 9,632 lb. of sand and gravel
* 940 lb. of cement
* 276 lb. of clays
* 400 lb. of salt
* 302 lb. phosphate rock
* 639 lb. of nonmetals
* 425 lb. of iron ore
* 77 lb. of bauxite (aluminum)
* 17 lb. of copper
* 11 lb. of lead
* 10 lb. of zinc
* 6 lb. of manganese
* .0285 T oz. gold
* 29 lb. of other metals

Plus:

* 7,667 lb. petroleum
* 7,589 lb. coal
* 6,866 natural gas
* 1/3 lb. uranium