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Why Some People Faint When They See Blood
science.howstuffworks.com/life/inside-the-mind/human-brain/why-people-faint-sight-blood.htm
What's the science behind fainting at the sight of blood? This BrainStuff video takes a look at the brain's internal toggle switch making some people hit the floor.
Wisdom Teeth Can Stay, Says Oral Surgery Organization
The wisdom on wisdom teeth has mostly been to take them out. Read about the newly revised stance for extracting wisdom teeth at HowStuffWorks Now.
Goodbye to Allergies? Scientists Discover How to Trick Body's Immune System
Northwestern University researchers have a 'Trojan horse' strategy for treating asthma and allergies. HowStuffWorks Now explains.
Early Humans Mated With Inbred Neanderthals — at a Cost
science.howstuffworks.com/life/evolution/early-humans-mated-inbred-neanderthals-a-cost.htm
Neanderthals may be long gone, but their genetic footprint lives on - in us.
¿Puedes aprobar este examen de primeros auxilios de emergencia?
play.howstuffworks.com/quiz/can-you-pass-this-emergency-first-aid-test-sp
Desde rasguños hasta ataques al corazón, ¿puedes saber cuál es la diferencia entre una emergencia y una lesión menor que solo requiere de primeros auxilios básicos? Toma este examen para ver si podemos dejarte confundido.
98% of People Can't Ace This Human Biology Quiz. Can You?
play.howstuffworks.com/quiz/98-people-cant-ace-this-human-biology-quiz-can-you
Did you know that your brain is more active in the evening and at night, while you're sleeping, than during the daytime? It's true -- that's when it does it most work. Let's see how much you know about basic human biology, and debunk some myths about all the things going on inside you without your knowledge right now.
Which Sleep Cycle Best Fits Your Busy Schedule?
play.howstuffworks.com/quiz/which-sleep-cycle-best-fits-your-busy-schedule
Rumors persist that the greatest minds in the world survived on a variety of non-traditional sleep cycles to tap into their creativity. Should you follow the way of Michaelangelo and DaVinci or your mother's eight-hour advice? Take this quiz to see which sleep cycle is best for you!
No One Can Live Without a Mesentery, But What Does It Do?
health.howstuffworks.com/human-body/parts/mesentery.htm
In 2017, scientists discovered the 79th organ of the body. What took them so long and what does it do?
What's Your Emotional Age?
play.howstuffworks.com/quiz/whats-your-emotional-age
Emotional age doesn't necessarily correspond with actual age. You might be 24 with the emotional maturity of an 8 or 53-year-old. Everyone is at different stages along the way. How do you compare? Play on to find out!
Can You Answer These Basic Nursing Questions?
play.howstuffworks.com/quiz/can-you-answer-these-basic-nursing-questions
If it weren't for nurses, no doctor's office or hospital would still be running. That's why these nursing questions are so vital, but can you answer them all correctly?