Cafe

The immune system is a vast network of cells, tissues, and organs that coordinate your body's defenses against any threats to your health. Without it, you'd be exposed to billions of bacteria, viruses, and toxins that could make something as minor as a paper cut or a seasonal cold fatal. So how does it work? Emma Bryce takes you inside the body to find out.

Readers of Aaron's blog know of his beef with the milk industrial complex. Why does milk, of all beverages, get a pass in our efforts to reduce everyone's caloric intake? Why is it encouraged, when all others are shunned? Is it because you need the calcium? Is it because it makes your bones stronger? Watch, and learn why the milk emperor has no clothes.

Canine and human mouths are bacterial ecosystems, but can they harm one another? "Sometimes, the oral contact between dogs and their owners can be more extensive than that between parent and child. Dogs kiss and lick their owners to express amiable emotions. This raises the possibility of transferring bacteria from the oral microbiome of dogs to their human owners."

Some perfumers can distinguish individual odors in a fragrance made of hundreds of scents; tea-experts have been known to sniff out the exact location of a particular tea; and the NYC Transit Authority once had a employee responsible only for sniffing out gas leaks.