On Mass
We Have Concerns - A podcast by Jeff Cannata/Anthony Carboni - Mondays
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Researchers in the US say they've created a fluid with negative mass in the lab. What it means is that, unlike pretty much every other known physical object, when you push this fluid, it accelerates backwards instead of moving forwards. Jeff and Anthony try to work through what this means for the universe and for Tru TV's Impractical Jokers.