Joseph Castro

Despite their name and appearance, peanuts are not tree nuts like walnuts and pecans — they're part of the legume family of plants, which includes beans, lentils, peas and other familiar foods.

Contrary to what some people think, pineapples don't grow on trees — they grow out of the ground, from a leafy plant.

Peripheral neuropathy (often referred to simply as "neuropathy") refers to any condition that damages or disrupts nerves in the peripheral nervous system.

Ketosis is a temporary physical condition marked by elevated levels of compounds known as ketone bodies in the body's tissues and fluids.

It's commonly believed that the ocean is blue because it's reflecting the blue sky. But this is a misconception.

Tasmanian devil mating involves a lot of aggression, battles for dominance and infidelity.

A flex-fuel vehicle (FFV) is a vehicle with an internal combustion engine capable of operating on a mixture of fuels, typically gasoline and ethanol.

The primary motivation behind veganism is to reduce harm to all living creatures. It is "compassion in action," according to the American Vegan Society.

Coffee has both positive and negative effects on the body and mind, but the benefits appear to outweigh the harms for most people.

Corals rely on the photosynthesis of algae for oxygen. To make sure algae get the light they need, coral tissue traps and redistributes sunlight.

Dragonfly mating involves violent battles, flashy courtship dances and heart-shaped coitus.

Rapidly growing mountains have higher rates of soil production and weathering than scientists thought possible, suggesting they may be able to act as carbon sinks.

Bat sex involves unique behaviors not seen in other mammals, including swarming, honking and oral sex.

Yeasts are microscopic, single-celled organisms belonging to the fungi kingdom — the taxonomic group that also includes mushrooms and mold.

Peafowl sex is a sight to behold, involving brilliant train displays, rattles and hoot dashes. Once the peacock and peahen have mated, they go their separate ways.

Karma, a Sanskrit word that roughly translates to "action," is a core concept in some Eastern religions, including Hinduism and Buddhism.