Ever wonder why it stings and feels so uncomfortable if you get water up your nose? SciShow explains how the warm and salty environs of your sinuses don’t care for the cool and fresh water found in most swimming pools.
Kurzgesagt wraps up 2017 with a follow up to its fascinating clip about the relationship between an organism’s size and the way it evolves. This time out, we learn how we might actually explode if we weren’t the size we were meant to be. Say, was that Barb at 1:30?
Sight, smell, touch, taste, hearing. We’ve had it engrained our whole lives that those are THE five human senses, but there are many other things we can detect that don’t tie to an obvious sensory organ. Vox delves into some of our abilities which didn’t make the short list.
We’re sure that we’re oversimplifying in our headline, but we’ll let TED-Ed and molecular biologist Anusuya Willis explain how the single-celled cyanobacteria which nearly wiped out most life on Earth, then gave us the oxygen and plants we all need to exist.