River Green for a Day

It all started with Plumbers Union Local 130 about 60 years ago and the city of Chicago is still dyeing the Chicago River green in celebration of St Patrick’s Day. Probably not the most environmentally-friendly way to celebrate, but it does stand out:

The Chicago River as it flows through downtown after it was dyed green in celebration of St. Patrick's Day on March 13, 2021.
Scott Olson / Getty Images

Happy St Patrick’s Day!

Soft robot?

Check out the “soft” AUV that a team of Chinese researchers have developed and tested in the Mariana Trench!

A BlueROV2 with Newton Gripper was used to release the little “mantabot” at depths of 8m and 70m during its testing phase, before the little flapper dove to 3,224m in the South China Sea and then 10,900m in the Mariana Trench.

Full article at: TechExplore 04mar21 and Nature.com