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The pioneering life of Bill Nye—from science celeb to space innovator

Bill Nye has led an intriguing life, from his time as a mechanical engineer for Boeing (where he invented a hydraulic resonance suppressor tube) to his current run as a climate change activist.

A timeline of Halloween history

This Stacker slideshow offers a chronological timeline of the history of Halloween. It begins with the Celts celebrating Samhain 2,000 years ago and ends in 2018 when Americans spent $9 billion on Halloween candy.

History of dogs in space

Between 1951 and 1966, the Soviet space program carried out an initiative that experimented with sending dogs into space to learn more about human potential. This photo gallery honors Laika, the first dog in space, along with many of her fellow canine cosmonauts. 

Common household items that are actually bad for the environment

This Stacker gallery features a list of some common household items harmful to the environment, some of which are surprising. These everyday items include mattresses, coffee makers, toothpaste, light bulbs, cell phones, toasters, and others.

30 foods that are poisonous to dogs

This Stacker gallery showcases 30 foods that can potentially be poisonous to dogs. The gallery includes things like nutmeg, garlic, cherries, peaches, onions, and other everyday foods.

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