Did You Know...

[wallace]

...that it is a mathematically provable certainty... that there are always two opposite points somewhere on the surface of the earth that have exactly the same temperature and barometric pressure?

For this, skip ahead to 9:28 ... goes to 12:52

http://boingboing.net/2016/10/04/mind-blowing-explainer-on-fixe.html

[Mugwump]

...that it is a mathematically provable certainty... that there are always two opposite points somewhere on the surface of the earth that have exactly the same temperature and barometric pressure?

For this, skip ahead to 9:28 ... goes to 12:52

http://boingboing.net/2016/10/04/mind-blowing-explainer-on-fixe.html

...cool............I'll have to scout out boingboing better later too....