
Isn’t it odd that, when something’s funny, you might show your teeth, change your breathing, become weak and achy in some places, and maybe even cry? In other words, why do we do this bizarre thing that is laughter? Since there’s no archaeological record of laughter, it’s impossible to say exactly how and why it evolved, but scientists have some theories. Sasha Winkler digs into the reflex. This TED-Ed lesson was directed by Hanna Rybak, narrated by Susan Zimmerman and the music is by Jarrett Farkas. Hosted on Acast. See acast.com/privacy for more information.
اگر پخش یا دانلود این قسمت خراب است، به مدیر اطلاع دهید.
Since humanity’s earliest days, we’ve been plagued by countless disease-causing pathogens. Invisible and persistent, these microorganisms and the illnesses they incur have killed more humans than anything else in…
Having your period is exhausting — and for many people across the world, menstruation is even more challenging because of stigmas and difficulty getting basic hygiene supplies, says social activist Ananya Grover. In…
Biologist Kathleen McAuliffe dives into emerging research that explores how certain gut bacteria can influence major parts of who you are, from your personality to life-changing neurological disorders. This week we're…
Have we misunderstood pain? This week we’re revisiting a talk by researcher and physician Amy Baxter as she unravels the symphony of connections that send pain from your body to your brain, explaining practical…
Have we lost the practical wisdom of what happens as people die? With lessons from a career witnessing thousands of people's final breaths, palliative care expert Kathryn Mannix urges us to demystify the experience of…