Quick Questions explains why, when it comes right down to it, there are really only eight kinds of people in the world.
Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/artist/52/SciShow
Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow
Looking for SciShow elsewhere on the internet?
Thanks Tank Tumblr: http://thankstank.tumblr.com
My mom says that "negative" blood-types aren't natural (she means that we evolved to have them) but she doesn't know where or why they came about. Do you guys like you could answer that for her? Thanks!
You forgot to tell people about the Bombay blood group, o blood group actually contains 'H' antibody , but theres a blood group that doesn't have the H either. It's the bombay blood group (Hh), and no I'm not talking about. 'O-'
I don't know what the people with O- are complaining about. My cousin has the Bombay blood group which only about 30,000 people in the entire WORLD have. And the Bombay blood group can only take from the Bombay blood group. Y'all lucked out
This video the most interesting mix of comments of any video I have ever seen. Most of the commants are either about commenters' blood types or commenters' families' blood types. Some are about how good the video is. Two comments are facts about blood types. There is even one wierdly political comment.
The class of drugs that Levitra, Viagra, Stendra, and Cialis belong to are called PDE5 inhibitors. They work by relaxing tight blood vessels, allowing more blood to surge into the penis and cause an erection, says Gregory Bales, M.D., an associate professor of urology at the University of Chicago.
The little pills do the trick for more than two-thirds of men with Viagra protects the heart (ED). They also work for guys who simply need them for a short time to get their “confidence back,” says Michael Eisenberg, M.D., director of male reproductive medicine and surgery at Stanford University.