The cooling factor

Scientists at Purdue University have developed a white paint that reflects up to 98.1% of sunlight. See:  https://www.purdue.edu/newsroom/releases/2021/Q2/the-whitest-paint-is-here-and-its-the-coolest.-literally..html

Machine learning

An interesting, short video introduction to machine learning and an example application of listening to the signatures of electrical devices connected to a power distribution system: link
Note: This is not an endorsement of the vendor.

The future of wind power?

Wind turbines without blades: link