Ammonia is extremely useful to us as a crucial ingredient in fertilizers. But producing it also has a significant carbon footprint, which is why scientists have been on the hunt for a way to make ammonia production greener.

The path that products take to get onto store shelves doesn’t always leave the best impact on the environment. But with green chemistry, chemists have found ways to make the production of some items safer for both people and the planet.

Scientists have known for some time that certain animals can breathe using their butts, but now, researchers have determined that certain mammals can too! And in very much other news, researchers in Washington state have developed a new...

The chemical process of catalysis happens in a myriad of places in our modern world - from industry to inside your cells. Our knowledge of catalysis today springs from Elizabeth Fulhame, who over 225 years ago became the first person to...

Building and launching rockets to learn about other worlds hasn't been great for Earth, but environmental engineers are working on changing that legacy.

Is there any better way to create new energy than to make it out of consumed energy sources?

Antimony is toxic to inhale, swallow and touch, but it might also save your life.

Chinese alchemists searching for an elixir of eternal life discovered the world's first chemical explosive. Hank has the full story on gunpowder in this SciShow about a big idea of science.

Deepika Kurup has been determined to solve the global water crisis since she was 14 years old, after she saw kids outside her grandparents' house in India drinking water that looked too dirty even to touch. Her research began in her...

Peaceful protests can help people have their voices heard, but sometimes a protest becomes a more aggressive riot. How does that happen?

Paul Andersen starts with a brief description of enzymes and substrates. He then explains how you can measure the rate of an enzyme mediated reaction. Catalase from yeast is used to break hydrogen peroxide down into water and oxygen. ...

In this video Paul Andersen explains how the three types of catalyst classes act to speed up reactions. Acid-base catalysts either add or remove a proton from one of the reactants. Surface catalysts provide active sites where reactants...

In this video Paul Andersen describes the characteristics of the rate constant in chemical reactions. The rate constant is highly variable in reactions and must be determined experimentally. The rate constant is dependent on both...

We’ve talked about benzene a bit already in this series, but did you know that benzene rings are present in all kinds of familiar substances? The styrofoam packaging that comes with new appliances, some pharmaceuticals, pesticides, and...

Even if you don't want to eat them, your apple cores still have plenty of energy left to give. SciShow explores how cities are capturing that energy and turning it into fuel.

Paul Andersen explains how catalysts can speed up a reaction without being consumed in the reaction. Catalysts can lower the activation energy of reaction be stabilizing the transition state. They can also create new reaction pathways...

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.

What causes the rate of reaction.

Howcast - Finish Mass Effect 3 in this walkthrough of Bioware's new release, Mass Effect 3.

Howcast - Check out part 71 and go down to the Asari homeworld, Thessia, and investigate the Asari Temple in this walkthrough of Mass Effect 3.

Howcast - Check out part 81 and go to the Illusive Man's base on Cronos Station in this walkthrough of Bioware's new release, Mass Effect 3.

Pupil outcome: I can understand the plot and context of ‘Othello’. Key learning points: - Iago is angry that he has been passed over for promotion, so pretends to love Othello whist plotting his downfall - Iago tells Desdemona's father...

Pupil outcome: I can explain the significance of Marley's ghost. Key learning points: - Marley’s ghost visits Scrooge and warns him of his impending damnation if he does not change his ways - Dickens uses Marley's ghost to convey...

We just learned about hydrogenation of alkenes via homogeneous catalysis, and the complicated catalytic cycles that are involved. But there is an additional aspect that we need to discuss. Whenever possible, we want to be able to employ...