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Nutty Putty Cave: Before and After the Tragic Death of John Jones

science.howstuffworks.com/environmental/earth/geology/nutty-putty-cave.htm

Nutty Putty Cave, near Salt Lake City, Utah, was discovered in 1960 and sealed up forever in 2009. But why?

Oak Ridge, Tennessee: America's Secret Atomic City

science.howstuffworks.com/oak-ridge-tennessee-secret-atomic-city.htm

The Manhattan Project built the city of Oak Ridge in rural Tennessee, where secret facilities produced uranium-235 for the atomic bomb.

Oedipus Complex: Digging Into Freud's Controversial Theory

science.howstuffworks.com/life/inside-the-mind/human-brain/oedipus-complex.htm

Delve into Freud's Oedipus complex, a theory suggesting children experience unconscious desires for their opposite-sex parent and rivalry with their same-sex parent.

Ohio Residents Fight to Give Lake Erie Legal Rights

science.howstuffworks.com/environmental/conservation/issues/nature-legal-rights.htm

A growing network of global activists is taking an alternative approach to saving the environment: Pushing to recognize natural ecosystems as having legal rights like humans.

Oil Sands: Energy Evolution and Environmental Concerns

science.howstuffworks.com/environmental/green-science/oil-sands.htm

Oil sands are a mixture of clay, sand and water with a small amount of bitumen. Learn about oil sands, find out how energy intensive it is to refine oil sands.

Only a Black Hole Could Make a Black Hole That Massive!

science.howstuffworks.com/only-black-hole-could-make-black-hole-that-massive.htm

Black holes may merge to produce second-generation black holes. Learn more about black holes at HowStuffWorks.

Otis Carr

science.howstuffworks.com/space/aliens-ufos/otis-carr.htm

Otis Carr was a businessman and hoaxster who founded OTC Enterprises to build and sell a free-energy spaceship, the OTC-X1. Read more about Otis Carr.

Otzi the Iceman Ate a High-fat Last Meal

science.howstuffworks.com/life/biology-fields/otzi-iceman-ate-high-fat-last-meal.htm

Researchers say that Otzi, the ancient man found in the Alps in 1991, lived on a diet loaded with fat to maintain warmth and energy in his cold, high-altitude environment.

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