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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,…

Are you breathing air molecules that were once exhaled by Caesar, Joan of Arc, or Madame Curie? Why did Albert Einstein try to break into the refrigerator business? In this video, writer Sam Kean, author of science books "Caesar’s Last…

Vanilla is a flavor so common that some people use it as an adjective to describe something plain or ordinary. But watch out! This beloved, flavorful bean may soon become a rarity. Credit: Reactions/American Chemical Society

This animation shows how a barometer measures atmospheric pressure.

Some ice burns because it’s actually methane trapped in water. This video discusses the chemistry of methane hydrates as a source of energy and a climate change threat. Credit: Reactions/American Chemical Society

This video contains chemistry-fueled solutions for everyday problems, such as spotting rotten eggs, reviving soggy green vegetables, and fixing busted buttons. [Credit: Reactions/American Chemical Society (www.youtube.com/acsreactions)]

When temperatures fall along with snow, you know you're in the middle of winter. This video has seasonal advice on keeping your windshield fog-free, getting unstuck from the snow, and even how to make your own hand warmer. [Credit:…

This video examines the science behind the most misunderstood spice in the world: allspice. [Credit: Reactions/American Chemical Society (www.youtube.com/acsreactions)]

Pepper is one of the most common condiments in the world today, but it used to be more valuable than gold. This video examines how pepper's delectable chemistry made it a key player in the global spice trade. [Credit: Reactions/American…

What happens when you get covered in poison ivy and you cannot stop scratching? Jennifer Novotney, winner of the 2014 Chemistry Champions science communications competition, breaks down what it is about that dreaded vine that makes us so…