Human Extinction

source: Vsauce     2015年3月7日
Some ideas about our end.
Twitter: http://www.twitter.com/tweetsauce
Instagram: http://www.instagram.com/electricpants
related Vsauce videos:
What Will We Miss? https://www.youtube.com/watch?v=7uiv6...
Cruel Bombs: https://www.youtube.com/watch?v=SHZAa...
Risk: https://www.youtube.com/watch?v=w-CK8...
Will We Ever Visit Other Stars? https://www.youtube.com/watch?v=lD08C...
last words: https://www.youtube.com/watch?v=Qig68...

The real story behind Archimedes’ Eureka! - Armand D'Angour

source: TED-Ed    2015年3月13日
View full lesson: http://ed.ted.com/lessons/the-real-st...
When you think of Archimedes’ Eureka moment, you probably imagine a man in a bathtub, right? As it turns out, there's much more to the story. Armand D'Angour tells the story of Archimedes' biggest assignment -- an enormous floating palace commissioned by a king -- that helped him find Eureka.

Lesson by Armand D'Angour, animation by Zedem Media.

Learning from smallpox: How to eradicate a disease - Julie Garon and Wal...

source: TED-Ed      2015年3月10日
View full lesson: http://ed.ted.com/lessons/learning-fr...
For most of human history, we have sought to treat and cure diseases. But only in recent decades did it become possible to ensure that a particular disease never threatens humanity again. Julie Garon and Walter A. Orenstein detail how the story of smallpox – the first and only disease to be permanently eliminated – shows how disease eradication can happen, and why it is so difficult to achieve.

Lesson by Julie Garon and Walter A. Orenstein, animation by TOGETHER.

How brain parasites change their host's behavior - Jaap de Roode

source: TED-Ed      2015年3月9日
View full lesson: http://ed.ted.com/lessons/how-parasit...
The biggest challenge in a parasite’s life is to move from one host to another. Intriguingly, many parasites have evolved the ability to manipulate the behavior of their hosts to improve their own survival -- sometimes even by direct brain control. Jaap de Roode details a few parasites that can really mess with the mind.

Lesson by Jaap de Roode, animation by Andrew Foerster.

Why sitting is bad for you - Murat Dalkilinç

source: TED-Ed      2015年3月5日
View full lesson: http://ed.ted.com/lessons/why-sitting...
Sitting down for brief periods can help us recover from stress or recuperate from exercise. But nowadays, our lifestyles make us sit much more than we move around. Are our bodies built for such a sedentary existence? Murat Dalkilinç investigates the hidden risks of sitting down.

Lesson by Murat Dalkilinç, animation by Oxbow Creative.

Rhythm in a box: The story of the cajon drum - Paul Jennings

source: TED-Ed     2015年3月3日
View full lesson: http://ed.ted.com/lessons/rhythm-in-a...
Many modern musical instruments are complicated pieces of machinery with many moving parts. But the cajon is simply a drum and a stand and a seat all in one box. Paul Jennings explains the history behind the cajon and how it has become one of the most versatile and popular percussion instruments in the world today.

Lesson by Paul Jennings, animation by Avi Ofer.

How does the thyroid manage your metabolism? - Emma Bryce

source: TED-Ed     2015年3月2日
View full lesson: http://ed.ted.com/lessons/how-does-th...
Nestled in the tissues of your neck is a small, unassuming organ that wields enormous power over your body: the thyroid. Emma Bryce explains how the thyroid, like the operations manager in a company, is tasked with making sure that all the cells in your body are working properly.

Lesson by Emma Bryce, animation by Tremendousness.