DALLASI absolutely love this, it's called an orrery, and it's a little mechanical model of our solar system. You can see the planets here, orbiting the sun as they would do in real life.
Interesting Engineering on MSN1mon
MIT’s new battery-free solar desalination system dances with Sun’s rhythm“Compared to RO, electrodialysis membranes usually last about three times as long,” Amos Winter, the Germeshausen Professor ...
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