Despite some bold claims, most supplements can’t really "boost" your metabolism, and the actual changes we can make to it are pretty limited.

Plants! If oxygen and good smells aren't enough for you, here's a collection of episodes that might win you over.

You've probably seen cows enjoying a nice mouthful of grass, but why can't we do the same?

From being able to eat grass, to changing the weather with their burps: Cows are incredible creatures!

Around the world there are more than 600 plant species that supplement a regular diet of sunlight, water and soil with insects, frogs and even rats. Flies, tadpoles and beetles fall prey to the remarkable, predatory antics of carnivorous...

Carbs are pinned to be the villains in many diets, but those poor guys are just misunderstood.

With sandwiches and toast, sourdough bread always adds an extra accented flavor to your meals. But where does the signature tartness come from?

Nachos are great...if you are among the lucky ones whose body can digest them. When digestion goes according to plan, the small intestine performs most of your chemical digestion in the duodenum, while accessory organs including...

What makes flamingos go from grey to pink? And can the same thing happen in humans? Quick Questions explains!

The Amoeba Sisters explain enzymes and how they interact with their substrates. Vocabulary covered includes active site, induced fit, coenzyme, and cofactor. Also the importance of ideal pH and temperatures for enzymes are discussed.

Paul Andersen surveys the Kingdom Fungi. He starts with a brief description of the fungi phylogeny. He describes some of the major characteristics of fungi; heterotrophy, cell walls of chitin, hyphae, sessile. He describes the...

We hear about calories all the time: How many calories are in this cookie? How many are burned by doing 100 jumping jacks, or long-distance running, or fidgeting? But what is a calorie, really? And how many of them do we actually need?...

Each year humanity produces roughly 400 million tons of plastic, 80% of which is discarded as trash. Of that plastic waste, only one-tenth is recycled. 60% gets incinerated or goes into the landfills, and 30% leaks out into the...

The bacteria in our guts can break down food the body can't digest, produce important nutrients, regulate the immune system, and protect against harmful germs. And while we can't control all the factors that go into maintaining a healthy...

Animals eat their own poop in order to gain extra access to nutrients or to microbes that help digest those nutrients.



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Ray Bradbury’s novel imagines a world where books are banned- and possessing, let alone reading them, is forbidden.The protagonist, Montag, is a fireman responsible for destroying what remains. The story raises the question: how can you...

Howcast - Learn if food combining can help you lose weight from nutrition expert Alex Jamieson in this Howcast video.

Howcast - Learn the pros and cons of juicing from nutrition expert Alex Jamieson in this Howcast video.

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Howcast - Learn about gastroenterologist Lisa Ganjhu, MD, one of Howcast's experts in stomach problems and digestive disorders, in this video.

Howcast - Learn how to prevent stomach bloating from gastroenterologist Lisa Ganjhu, M.D. in this Howcast video about stomach problems and digestive disorders.

Howcast - Learn what causes stomach bloating from gastroenterologist Lisa Ganjhu, M.D. in this Howcast video about stomach problems and digestive disorders.

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Howcast - Learn about Dumping Syndrome from gastroenterologist Lisa Ganjhu, M.D. in this Howcast video about stomach problems and digestive disorders.