> the researchers designed ZIF-8 rods with diameters about 1/15 that of a human hair

Always amazes me how we're able to create things this small/thin.

> In simulated radioactive wastewater, the microrobots removed 96% of the uranium in an hour

That's a very respectable number, I'm curious how they simulated waste water and what the differences would be with real waste water.

> The team collected the uranium-loaded rods with a magnet and stripped off the uranium, allowing the tiny robots to be recycled.

And they're reusable? Bravo!