By the numbers Valuing the Earth

20 cents: Estimated cost, in U.S. dollars per square meter, of privately owned Costa Rican rain forest

$1.98: Cost per square meter of agricultural land in New Jersey

$154: Cost per square meter of U.S. interstate highway

$10,821: Cost per square meter of Manhattan real estate, New York

$62,857: Cost per square meter of single-depth lakeside plot, Hollywood Forever Cemetery, Hollywood, Calif.

Source: Worldwatch Institute

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