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The decline of railroads came about during the 1960s and 1970s as the automobile dominated transportation. Read about the decline of railroads.

Male puberty marks one of the most awkward times in a boy's life. Learn what changes happen during male puberty and all about male puberty hormones.

10 restaurant chains that flopped are explained in this article. Learn about 10 restaurant chains that flopped.

Scientific peer review is a quality-control system that critiques all new scientific discoveries. Learn more scientific peer review and its flaws.

Extremophiles are organisms that live in "extreme" environments. Learn why extremophiles are remarkable, not only because of their habitats.

The five heaviest buildings ever moved rank high in the history of structural moving. Learn what those five heaviest buildings are.

The 1937-1938 Ford lineup caused quite a stir, beginning with the spectacular introduction of the 1937 models. Follow the 1937-1938 Ford story.

The 1949-1951 Ford Mercury Woody was not the most reliable car, but they were popular nonetheless. Learn more about the 1949-1951 Ford Mercury Woody.

The 1935 Plymouth was new from the frame up, featuring major design and engineering advances. Get important information on this Plymouth model.

Hearing aids are small electronic devices that amplify sound and help restore sound to the hearing impaired. Find out how hearing aids work.

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