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It's an odorless gas that's present in a variety of home products, cosmetics, car exhaust and even humans. But is it bad for us?

Humans sure make a lot of earwax, but what's it made of? Learn what's in your earwax at HowStuffWorks.

If animals predict the weather, could they save human lives? Learn if animals predict the weather, or if they have a meteorolgoical sixth sense.

Our ancestors survived long winters because of fermented foods, but what health benefits do they have for modern humans?

The two passengers might not be human, but they have a job to do. They're manning Artemis I to be zero gravity indicators.

Skin pigmentation is an interesting part of human anatomy. Visit HowStuffWorks to learn all about skin pigmentation.

Greenhouses are undoubtedly an integral part of humanity's future. Check out these 5 innovative greenhouses to see the future of green gardening.

Religion is as diverse as humanity, with major world religions well-known, yet countless others have existed throughout history.

The EPA was established in order to protect human health and the environment. Learn more about the EPA and some of the duties the EPA performs.

A new era of pet foods created in the lab, sustainably and with reduced environmental impact, is coming. But will pets - and their humans - like it?

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