Once a cup of coffee goes cold, it'll never taste the same -- but why? Learn the science behind the weird flavors of microwaved coffee in this episode of BrainStuff.Learn more about advertising on the HowStuffWorks podcasts at www.howstuffworks.com/advertisers.htmAnd to learn about your ad choices when listening to podcasts, visit https://www.howstuffworks.com/privacy.htm#ad-choices
