3 articles
The trillions of microbes living in and on you are mostly harmless or helpful — fermenting fiber, making vitamins, training immunity, and crowding out pathogens.
What a virus actually is, why it is not a small bacterium, how it hijacks a host cell to copy itself, and why antibiotics do nothing to it.
What antibiotics actually attack, why they do nothing to viruses, the four ways bacteria defeat them, and why a dose that is almost strong enough is the worst dose of all.