The same enzyme that used to save us is now killing us because the body reactions it catalyzes now cause more harm than good.

Paul Andersen explains how organisms use information to communicate with each other. Signals are used by bees doing the waggle dance to communicate the location of flowers. Territorial markings are used by wolves to establish...

Some bacteria seem to be using a type of memory to help them alter future behaviors, based on their past experiences.

If it smells like delicious buttered popcorn when you are in a middle of the forest, it’s not because there’s a movie theater nearby, but Binturongs, arboreal carnivore, might be.

Who doesn’t love to gaze at a beautiful butterfly fluttering by? Aesthetically speaking, they are simply wonderful to watch. Wonderful, that is, unless you are getting a rare glimpse of pheromone laced coremata.

They explode when you touch them. Even a millionth of a gram can kill you. They can even disable you with their horrifying smell. SciShow introduces you to give of the most dangerous chemicals in the world.

You’d never tell just by staring out from a sandy beach, but the coasts are gradually getting darker, and the effects of this darkening are only beginning to be understood.

The answer to why wasabi is such a nose burner has to do with a compound that researchers are trying to use in a creative way!

Scientists are uncovering the mysteries of a non-addictive painkiller... that lives in your mouth <br/>

If you were given a chemical and told to identify it, how would you go about doing that? You could look at different factors like color, boiling point, melting point, or smell, but the answer still might not be clear. Thankfully, today...

An intermittent fasting diet is one of the hippest new nutrition and fitness philosophies, based around the idea that going hungry can be good for your health. Some think it's a weight loss secret that calls upon our ancient evolutionary...

What does it actually mean when a label says something ‘causes cancer’? Those labels can be misleading, but knowing the legal and scientific reasoning behind them can help.

How do adult strawberry poison frogs pass on toxins to their tadpoles? What happens when scientists add iodine to axolotl tanks? Find out, as our How To Adult hosts Rachel Calderon-Navarro, Project Manager at DFTBA, and Hank Green face...

Humans know a lot about bees, seeing as they impact both our ecology and our economy. But there's something about bumble bees that we totally missed until recently; a super weird and mysterious behavior that might give them a leg up in...

Hank talks about the scary new drug that's led to some recent incidences of goat stabbing, as well as other tragedies - bath salts. We learn how it works and ask the important question: why?

Sodium pentothal, the so-called "truth serum,' is real! But does it work? Find out what "truth serums' do, and how your brain lets you tell lies.

Playing with LEGOS is fun. But, they can also teach us something about matter. In this episode of Crash Course Kids, Sabrina chats about chemical reactions and the Conservation of Matter.

Let’s face it: humans stink! But that’s not always a bad thing - we use smells to interact with each other and navigate our lives.

There’s a lot of confusion over what organic means, and food with that label might not be as healthy or environmentally friendly as you think.

We continue our tour of the nervous system with a look at synapses and the crazy stuff cocaine does to your body.


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Electrical Synapses Use Ion Currents Over Gap Junctions to...

The world’s first artificial pigment, Egyptian blue, may help scientists prevent forgery and even save lives.

If you take a look at an ingredients list, odds are you'll find natural and artificial flavors somewhere in there. Turns out there's a whole science to making your pumpkin spice latte taste like pumpkin spice, or your potato chips taste...

A recent study has concluded that people all over the world are probably ingesting microscopic plastic all the time. Now scientists want to know where this plastic is coming from, how it ends up inside of us, and the damage it could do...

Bakers will sometimes replace the butter, oil, or eggs in their breads, muffins, and assorted tasty treats with applesauce. That pretty much sounds like culinary magic, but it's not... it's culinary SCIENCE!