[120] Oil Fields, Coal and Gas Deposits / Major Oil Spills

[119] Submarine Fiberoptic Network

[118] Time Zones

[117] Nuclear Explosions

More than 2000 nuclear bombs have been detonated worldwide since 1945. In 1963 the superpowers agreed to limit themselves to underground testing. By then the atomic radiation in Europe had increased to levels comparable to those caused by the Chernobyl accident.

[115] Wetlands

Wetlands" is the collective term for marshes, swamps, bogs, and similar areas. About 75% of all endangered species are native to the world's wetlands.