Four Cool Videos

Here are four fun and useful videos:

1. What the Fahrenheit?! by Veritasium tells the story of the Fahrenheit temperature scale.
2. Diving Between the Continents by Smarter Every Day dives into the Silfra fracture in Iceland (you can skip the first and last part of the video).
3. Earth's History Plays Out On A Football Field 'maps' 4.6 billion years onto 100 yards.
4. How Humans Made Malaria So Deadly by MinuteEarth.