Learning Resource

Most melatonin supplements are made in labs using a chemical synthesis process that combines various precursors to mimic the hormone naturally produced by humans. Melatonin has become a household name for anyone struggling to find a solid night of rest. While our brains produce this hormone in the pineal gland, the bottles you see on

Magnets are made by melting specific metals like iron, nickel, or cobalt together and then exposing the cooled alloy to a powerful magnetic field. Most people see magnets as simple tools that stick to fridge doors or power speakers. But the process of creating these magnetic tools involves intense heat, careful chemical balancing, and massive

Scientists make insulin by inserting the human insulin gene into bacteria or yeast, which then act as tiny factories to produce the hormone. Living with diabetes once meant relying on insulin harvested from the pancreases of cows and pigs. While this saved lives, it was far from perfect. Some people had allergic reactions, and the

Manufacturers make fart spray by mixing sulfur-based organic compounds, like skatole and thiols, with water and pressurized propellants to create foul odors. The science of bad smells involves a lot more than just mixing garbage. When you press the nozzle on a can of stink spray, you are releasing a carefully engineered chemical cocktail designed

Manufacturers create dry ice by cooling and compressing carbon dioxide gas into a liquid before expanding it to form solid snow. Dry ice sits at a chilly -109.3 degrees Fahrenheit, making it a staple for shipping perishables and creating stage fog. Unlike regular ice made from water, this substance skips the liquid phase entirely when

Cyanocobalamin is made through large-scale bacterial fermentation using specific microbes like Pseudomonas denitrificans to synthesize the complex vitamin B12 molecule. Most people know vitamin B12 is a necessity for health, but few stop to think about where that little red pill comes from. Unlike many vitamins that can be easily synthesized in a test tube

They make alcohol through fermentation, a process where yeast consumes sugars to create ethanol and carbon dioxide; some drinks require extra distillation. Alcohol has been a part of human history for thousands of years, popping up in almost every corner of the world. While the bottles on store shelves look polished, the science behind them

Meteorologists forecast weather by collecting atmospheric data from satellites, radars, and ground stations to run complex mathematical models of future conditions. Peering into the future of the atmosphere is part physics and part supercomputing. When you check your phone to see if you need an umbrella, you are seeing the result of a global network

Scientists determine calories in food by burning samples in a bomb calorimeter or by adding up the energy values of specific nutrients. Ever look at the back of a snack pack and wonder how those numbers got there? It seems like magic that a company knows a cracker has exactly fifteen calories. You might think

Scientists figure out calories by burning food samples in a bomb calorimeter or by using the Atwater system to add up protein, fat, and carbs. Every snack box or canned good you pick up has a number on the back. That number tells you how much energy you get from eating it. But how do