The Indian Express6d
Why do disinfectants only kill 99.9% of germs? Here’s the science
Have you ever wondered why most disinfectants indicate they kill 99.9% or 99.99% of germs, but never promise to wipe out all of them? Perhaps the thought has crossed your mind mid-way through cleaning ...
The New York Times1d
The Learning Network
What do you think the new year has in store for us? By Michael Gonchar Look closely at this image, stripped of its caption, and join the moderated conversation about what you and other students ...
verywellhealth2d
What Are Boogers Made Of? Texture and Function
The mucus in our nose collects these harmful germs and substances and keeps them from getting too far into our bodies where they can make us sick. What Is Snot? Mucous membranes in the body—like the ...