From: TED-Ed - Sunday Sep 16, 2018 01:12 pm
How do cigarettes affect the body? 
Can you solve the rebel supplies riddle?
Lesson by Alex Gendler, directed by Outis
You’re overseeing the delivery of supplies to a rebel base in the heart of enemy territory. To get past customs, all packages must follow this rule: if a box is marked with an even number on the bottom, it must be sealed with a red top. One of the four boxes was sealed incorrectly, but they lost track of which one. Can you figure out which box it is and save the day? Alex Gendler shows how.
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How do cigarettes affect the body?
Lesson by Krishna Sudhir, directed by TED-Ed
Cigarettes aren’t good for us. That’s hardly news -- we’ve known about the dangers of smoking for decades. But how exactly do cigarettes harm us, and can our bodies recover if we stop? Krishna Sudhir details what happens when we smoke -- and when we quit.
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Is there any truth to the King Arthur legends?
Lesson by Alan Lupack, directed by Patrick Smith
King Arthur has risen again and again in our collective imagination, along with his retinue of knights, Guinevere, the Round Table, Camelot, and of course Excalibur. But where do these stories come from, and is there any truth to them? Alan Lupack traces the evolution of King Arthur.
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Do animals have language?
Lesson by Michele Bishop, directed by Avi Ofer
All animals communicate. But do they have language? Michele Bishop details the four specific qualities we associate with language and investigates whether or not certain animals utilize some or all of those qualities to communicate.
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