Things You Thought You Knew - Earth’s Spinning Core
StarTalk Radio
00:00
Farm Tractor Tire Pressure
Farm tractors have huge tires, right? Huge tires. In that way, they put relatively low air pressure in them. That way when the tires roll over the crops, it does minimal damage. You can still hold up the tractor if you get enough area coming down. Otherwise, you'll be leaving deep tracks in the road and you can't have that.
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