Does your toilet water drain differently than in the other hemisphere? Is it because of the Coriolis effect? Hank has some things to clarify about these questions, and more in this edition of I Don’t Think It Means What You Think It Means.
There are a lot of ways to kill and be killed in the animal kingdom, but only a lucky few use the powers of venom. Not all are closely related, so how did they acquire the same defenses, where did venom come from, and how does it work? And what animals can kill you the most quickly? Find the answers to these questions, and more, in today’s episode of SciShow.
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Although it may sound crazy, many doctors use maggots today to clean wounds of dead and infected tissue. This process, called debridement, is important for preventing the spread of infection in a world of increasing antibiotic resistance. Hank has more details on the marvelous maggot in today’s episode of SciShow.
Cicadas have developed an amazing strategy for growth, survival, reproduction, and overcoming predation by…doing nothing. They do nothing for years (except sip at the juice excreted from root structures) before emerging in huge, simultaneous swarms.
The swarm is so huge that predators can’t consume even a fraction of it, but so rare that predator populations can’t sustain themselves between emergence events. Clever little things!
Hank introduces us to 6 blood-drinking (or otherwise consuming) animals that you may not be aware of. Don’t freak out…
Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/artist/52/SciShow
Although polar bears and grizzly bears aren’t all that similar and are definitely separate species, they can interbreed and create fertile offspring in the wild. Hank brings us the story of these misfit bears, which he likes to call grolar bears.
** UPDATE: We got a couple of things wrong when it comes to gravity (particularly that it has nothing to do with photons). Check out this video from TheGentlemanPhysicis (http://www.youtube.com/watch?v=4y-dFLZHb1c) in which our confusion is explained. We also did a whole video about gravitation in our series on the four fundamental forces of physics, which you can watch here: http://www.youtube.com/watch?v=yhG_ArxmwRM **
Science is working tirelessly night and day to disprove its own theories about how the universe works (or at least, that’s what science thinks it’s doing). Hank tells us a quick history of how we came to create and adopt the scientific method and then gives us a vision of the future of science (hint: it involves a lot more computers and a lot less pipetting).