This is SCIENCE FRIDAY. I'm Flora Lichtman. Later in the hour, a teenage science activist and the plight of the monarch butterfly. But first, researchers have developed a new way to fight antibiotic-resistant microbes by borrowing a trick from a longtime foe of the bacteria, the bacteria phage.
FLORA LICHTMAN, BYLINE: Up next, another mover and shaker in the alimentary canal - coffee. Whether you're a home brewer or a latte devotee, whether you take it light and sweet or on ice, your coffee is guaranteed to be chock full of chemistry. It starts in the bean, which is actually not a bean at all.
It's a seed, according Harold McGee, author of "On Food and Cooking: The Science and Lore of the Kitchen" along with other books on science and food. And we caught up with Harold, to hear more about how coffee gets its signature taste.
A few days after Rehtaeh Parsons' mother turned off the hospital life support systems and allowed her daughter to die, computer activists claiming to be affiliated with the hacker group Anonymous are threatening to reveal the identities of Parsons' alleged rapists.