Why do we sweat? - John Murnan
AdultsBiologyHumanHealthScience... There are a number of scenarios that can make us sweat-including exercise, eating spicy foods, and nervousness.
The Deadliest Being on Planet Earth - The Bacteriophage
AdultsBiologyGeneticsNatureScienceHealth... A war has been raging for billions of years, killing trillions every single day, while we don't even notice. This war involves the single deadliest being on our planet: The Bacteriophage.
Your Body is Amazing ft. Christine Sydelko
AdultsBiologyHuman Discover why your body is a wonderland with Christine Sydelko!
What causes body odor? - Mel Rosenberg
AdultsBiologyHuman Most of us don't need more than one whiff to identify that generally unpleasant, characteristic smell we call body odor.
Could You Be Immune To Everything?
AdultsBiologyHealth Do you remember having a cold in 5th grade? Or the flu a couple years ago? Your immune system does.
The science of skin - Emma Bryce
AdultsBiologyHumanScience Between you and the rest of the world lies an interface that makes up 16% of your physical weight. This is your skin, the largest organ in your body: laid out flat, it would cover close to 1.7 square metres of ground.
Why Don't Sheep Shrink In The Rain?
AdultsAnimalsNatureScienceBiology... Getting wet isn't REALLY what makes wool shrink; it merely exacerbates the friction between the wool fibers, which is stronger in one direction than another, so when agitated in the washer or dryer, they migrate in relation to each other in a process called "felting."
Why Are There As Many Males As Females?
AdultsAnimalsBiologyNatureScience... In almost every animal species on Earth, equal numbers of males and females are conceived. Why is that?
How Evolution works
AdultsBiologyGeneticsHistoryScienceEvolution... The theory of evolution explains how the enormous variety of life could come into existence. How it is possible for primitive life forms to spawn the millions of different creatures, that exist today.
How did teeth evolve? - Peter S. Ungar
AdultsBiologyHealthHumanScienceEvolution... You may take them for granted, but your teeth are a marvel. They break up all your food over the course of your life, while being strong enough to withstand breakage themselves. How do they do it?
How to Make an Elephant Explode with Science - The Size of Life 2
AdultsAnimalsGeneticsScienceBiologyExperiments... Life on this planet is based on cells. Cells do vary in size. But they are pretty similar in their dimensions across all species. A blue whale doesn't have bigger cells than a hummingbird, just a lot more of them.
How does your immune system work? - Emma Bryce
AdultsBiologyHealthScience The immune system is a vast network of cells, tissues, and organs that coordinate your body's defenses against any threats to your health. Without it, you'd be exposed to billions of bacteria, viruses, and toxins that could make something as minor as a paper cut or a seasonal cold fatal. So how does it work? Emma Bryce takes you inside the body to find out.