We've been using lab rats for over a hundred years, and they've been part of some of the biggest medical breakthroughs ever. But what comes next? From organs on a chip to computer simulations, here are some of the ways that science...

Scientists have recently discovered the cells responsible for a deer's amazing ability to regrow antlers in just a few months. It may be the key to healing human wounds and broken bones faster.

Sometimes, major injury causes blood loss that results in improper clotting, or coagulopathy. Some researchers think a compound used in perfume to create jasmine fragrances could help save these patients.

The SciShow Science News Bureau brings us some GOOD news this week - Hank tells us about a newly developed vaccine for dengue fever, a newly discovered monkey species in the Democratic Republic of the Congo, and some happy pigs drinking...

Heart attacks are the number 1 cause of death worldwide in the 21st century, but we weren't sure what caused them until 1980.

If you've ever had a little cut or scratch, you know it doesn't take long for it to heal! But do you know how different parts of your body work together to fix you up good as new when you're hurt?

A new study calls the claims of fossilized brains into question, and another finds ichthyosaurs might have been bigger than our current champions, the blue whales.

What if you could control digital devices using just the power of thought? That's the incredible promise behind the Stentrode -- an implantable brain-computer interface that collects and wirelessly transmits information directly from the...

Jumping into a refreshingly cold body of water on a hot summer day can feel wonderful, except for your nose. Why does it hurt so much when you get water up your nose?

When you were a kid, did anyone ever tell you that your head would explode if you hung upside down for too long? Well... they might have been on to something.

The same enzyme that used to save us is now killing us because the body reactions it catalyzes now cause more harm than good.

From MMR boosters to tetanus, you'll probably get a lot of shots in your life. And one thing you might notice is that some of them don't feel like much, but some of them can make your arm reallllly sore! Why is that?

What if we could find cancerous tumors years before they can harm us -- without expensive screening facilities or even steady electricity? Physician, bioengineer and entrepreneur Sangeeta Bhatia leads a multidisciplinary lab that...

Anyone who has lost a loved one to pancreatic cancer knows the devastating speed with which it can affect an otherwise healthy person. TED Fellow and biomedical entrepreneur Laura Indolfi is developing a revolutionary way to treat this...

Fun Fact: people can donate over half of their liver, and the tissue will grow back within a year! Knowing that, it seems pretty logical to assume that we could just keep donating and regrowing our livers over and over again, but is that...

Now that we've discussed blood, we're beginning our look at how it gets around your body. Today Hank explains your blood vessels and their basic three-layer structure of your blood vessels. We're also going over how those...

You may be aware of certain hacks to sober up, but researchers have found a way to actually get booze out of our systems faster. And this discovery could help first responders when facing alcohol overdoses.

Jessi got a nose bleed while playing outside. In order to make it less scary, Jessi and Squeaks explain why they happen, and how to take care of them.

It turns out there's a scientific explanation behind the saying, "It's not the heat, it's the humidity!" Learn why a hot and humid day feels so dismal and some tips to avoid the really sweaty, gross days on today's Quick Question!

Since your body is already pretty good at healing itself, does icing an injury actually help?

Howcast - Learn what causes diverticulitis and how to treat it from gastroenterologist Lisa Ganjhu, M.D. in this Howcast video about stomach problems.

Howcast - Learn how to trim your pet rabbit's nails in this Howcast video featuring bunny lover Amy Sedaris and rabbit expert Mary E. Cotter.

When our body sustains a wound, new cells are formed near the edges of the injury and then move down to the base of the wound. Once these cells have migrated to the center of the wound, they connect with other cells nearby. Once this...

In this video, Jonathan from the Institute of Human Anatomy discusses what happens during a heart attack (myocardial infarction), the causes, and how they are treated. He also discusses some of the best ways to prevent and reduce a...