Not so long ago, most people thought that the only good microbe was a dead microbe.
But then scientists started to realize that even though some bugs can make us sick and even kill us, most don't.
In fact, in the past decade attitudes about the bacteria, fungi, viruses and other microbes living all over our bodies has almost completely turned around. Now scientists say that not only are those microbes often not harmful, we can't live without them.
As NPR reported in May, the number of Americans with Alzheimer's disease is expected to triple by 2050. But studies published in the last two weeks based in European countries show signs of declining dementia.
Sen. Kirsten Gillibrand, D-N.Y., is fighting for her bill to curb sexual assaults in the military. Her measure would give independent military prosecutors, rather than commanders, the power to decide which cases should be tried in military court.
Military leaders fiercely oppose moving that authority outside the chain of command, arguing that commanders are responsible for the health and welfare of their soldiers. Removing their authority would undermine their ability to lead, they say.