Why do apples turn brown when we cut them?

Could a cheaper, more environmentally friendly refrigerant already exist, and could corporate lobbying be helping keep it out of American air conditioners? Why did the chemicals once hailed as safe alternatives become environmental villains, and are their replacements actually mu ...  Show more

What happens when a chemist ventures onto Reddit to answer the internet’s most pressing science questions? Why does carbon get its own entire branch of chemistry, what makes fireworks burn different colors, and can an invention work even when its inventor has no idea why? Melissa ...  Show more

All cells contains thousands of enzymes, and each of these enzymes is necessary for the cell. Check out this HowStuffWorks podcast to learn which enzymes cause apples and potatoes to turn brown upon exposure to oxygen.

Green, yellow, striped, red, shiny, russet. Tart, sweet, sour, crunchy. Big, small, wild, heirloom, cultivated. How will you like them apples? Very much, once you hear all about the fascinating backstory of how an apple got into your lunch with one of the world’s finest pomolo ...

Brightly colored fruit stands out against green leaves, but why is some red or pink, while others skew yellow or purple? And why are some fruits smellier than others? Learn what new research says about fruits' evolution in this episode of BrainStuff. Learn more about your ad-choi ...  Show more

Apples are a delicious treat! These crispy crunchy sweet snacks are everywhere: in our school lunches, at the farmers market, even covered in caramel at the fair. But as Molly and cohosts Jack and Penelope find out, growing an apple is a lot harder than it sounds. In this episode ...  Show more