Mockup of 3 large banners hanging off the front of MSU's Renne Library to represent 420, the approximate background concentration of CO2 in the atmosphere in parts per million.

Outdoor CO2 concentrations were higher than 420ppm as of yesterday but will **decrease** as North America leafs out, a seasonal trend Dave Keeling 1st measured in the 1950s. And check out this week's #climateweek offerings @montanastate.bsky.social #keelingcurve #becausephysics #perfecttiming

#BecausePhysics

Super cool 🧵

Grégory Donzé, apple 🍏 farmer near Geneva, explains (in French) how to protect sprouts from cold temperatures: by freezing them!
Sprinkling water on them produces heat from the phase change (melting does the opposite). #becausePhysics...

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Amusing that the 100W incandescent light bulb is still a benchmark for energy consumption to compare to. It's being phased out to be replaced by LEDs (#becausePhysics). I don't think I have any left in my house. https://goo.gl/images/etdTEc

Fun fact: there are so few people on my flight that they redistribute people to the back. I now have a row for myself. #BecausePhysics