Watch as Canadian astronaut David Saint-Jacques takes a minute to show us how honey reacts to microgravity in space. Fascinating! [Canadian Space Agency]

Scientists have had a variety of hypotheses about how chemical stress can affect DNA to cause aging, but a new study has just shown the process in action. [SciShow]

Expired medicine might seem like a weird concept because a lot of it doesn’t get moldy or slimy like old food. Is it really a big concern? Find out in this episode of SciShow. [SciShow]

Are black holes indestructible? Explore the theory of Hawking radiation, a process that could lead a black hole to gradually lose mass and evaporate. [TED Ed]

Depression is a common disorder, and though it might seem like we’ve got it figured out, what it is and how to treat it is actually way more complicated than we think. Learn more about depression in this video from SciShow Psych. [SciShow Psych]

Would all our technology really be wiped out? Find out in this episode of Life Noggin! [Life Noggin]

Some people love the feeling of cracking their knuckles, while others cringe at the sound. But what causes that trademark pop? And is it dangerous? Eleanor Nelsen gives the facts behind joint popping. [TED-Ed]

Vaccines are one of our best tools to prevent dangerous diseases, but they come with side effects. So would it be safer not to vaccinate? This video has been supported by a grant from the Bill & Melinda Gates Foundation. [In a Nutshell]

Around a quarter of a million years after the Big Bang, the very first molecule, helium hydride was formed. Now scientists have confirmed that molecule is still being made, and they found it with some help from a high flying airplane. [SciShow Space]

You’ve probably heard about how the extinction of honeybees will lead to some sort of bee-pocalypse doomsday scenario for humanity. But what would actually happen if all the honeybees went extinct? Find out all about it in this episode of SciShow. [SciShow]