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Unlike its name, Bicycle Day is not a holiday honoring your favorite two-wheeled, environmentally friendly vehicle. This holiday celebrates the day chemist Albert Hofmann first discovered the psychedelic effects of lysergic acid diethylamide,…

Is gluten good for you, or is gluten bad for you? This video breaks down the chemistry and science behind this controversial food ingredient. Credit: Reactions/American Chemical Society

People have turned to “vaping” with electronic cigarettes as an alternative to puffing on the real thing. But is the vapor they’re inhaling any safer than smoking a cigarette? This video examines what we know, and what we don’t know, about…

Neuroengineer Nima Mesgarani is using a form of artificial intelligence called neural network models to a develop improved hearing aids. If successful, hearing impaired individuals will be better able to identify and focus on a speaker of…

A figure skating performance often begins with a moment of quiet focus to mentally "upload" a routine, consisting of a linked series of complex movements—such as jumps and spins—that must be executed expertly and automatically. This video…

Thanksgiving is a holiday when many people look forward to a tasty home-cooked meal. According to neuroscientist Charles Zuker, not only is that sense of taste in the brain, but it is a matter of life and death. This video takes you on a…

Toxin-producing strains of C. difficile bacteria can be a source of aggravated diarrhea, and—if unchecked—may ultimately lead to kidney failure and death. What’s worse is that antibiotics can make the situation even more life-threatening.…

An estimated 133 billion pounds of food gets thrown away every year in the United States. Understanding when your food goes bad is important to help reduce waste. Unfortunately, consumers can’t just check the expiration date on the packaging,…

Is there such a thing as love at first scent? Hundreds of spray-on pheromone products claim to put you on the fast track to romance, but can they really help humans land a mate? This video has the answers. [Credit: Reactions/American Chemical…

Every medicine we buy has an expiration date printed on it, but does that pill or tablet actually go bad? This video explains the chemistry of drug expiration dates. Credit: Reactions/American Chemical Society

Researchers at Virginia Polytechnic Institute and State University, popularly known as Virginia Tech, helped prove that lead levels were dangerously high in Flint, Michigan tap water, even when government officials denied the problem. This…

It’s a sinister condition that affects millions of people: addiction. Whether it’s alcohol, drugs, food, or gambling, addiction can ruin lives. This video takes a look at the chemistry behind addiction. Credit: Reactions/American Chemical…

This video uncovers the chemistry behind the spine-tingling sense of fear. Watch as Abigail Marsh, Ph.D., Associate Professor of Psychology at Georgetown University, highlights key brain chemicals and hormones involved in fear and the…

This video explains how certain neurotransmitters fuel lifelong pair bonds in prairie voles, which—along with humans—are the mammalian kingdom's leading monogamists. In the video, Abigail Marsh, Ph.D., Associate Professor of Psychology at…

This video explores the chemistry of, and pain response to, pepper spray. Watch for some important tips on what to do if you accidentally spray yourself with this debilitating substance. Credit: Reactions/American Chemical Society

What’s that stuff that collects in the corners of your eyes when you sleep? This video explains the chemistry of the film that protects your eyes. Credit: Reactions/American Chemical Society

When winter holidays come around, feasts and festivities cause many people to gain weight. But did you know that freezing-cold weather during those winter months can actually help people lose weight? This video talks about fat, and whether or…

This animation explains how a compact disk stores recorded information.

Joe DeSimone cofounded a company called Carbon (formerly Carbon3D) to bring chemistry to bear on 3D printing. This video shows how Joe enabled the company to print at unprecedented speeds, and churn out materials that have never been printed…

This animation describes several ways to make vaccines: with killed or inactivated pathogens, with live attentuated pathogens, with subunits of pathogens, and with recombinant DNA technology.

This video explores the chemistry behind whether using cannabidiol (CBD)—a non-psychoactive compound produced by the marijuana plant—could make you fail a drug test. Credit: Reactions/American Chemical Society

Some science-fiction fans have already caught a glimpse of a world with super-powered humans secretly living among us, capable of physical feats far beyond the norm. Now, with the CRISPR/Cas9 gene editing system, are we looking at a future…

This video explores how diseases may have spawned the folklore of vampires as far back as the 18th century. Pale skin, sensitivity to light, weakness, and other vampire-like characteristics are symptoms mostly related to rare blood disorders.…

Would you like a younger, more perfect-looking you? Young skin is firm and stretchy because of protein fibers, called collagen and elastin, in the tissue beneath the surface. As we age, environmental factors, such as smoking or ultraviolet…

Online entrepreneurs may try to sell bottled human pheromones, but do these even exist? It's doubtful, according to this video. Credit: Reactions/American Chemical Society