Episode number 84 - July 7th 2022 - AR contact lenses, Sand Batteries, and you need to replace your smoke detectors

This week's guest: Garfield Phinn from RV

Links to this week's stories:

https://bigthink.com/.../augmented-reality-ar-milestone.../

Batteries made of sand:

https://www.bbc.com/news/science-environment-61996520

Your smoke detector is likely dead and you need a new one:

https://lifehacker.com/is-your-smoke-detector-good-enough...

https://www.surveymonkey.com/r/2M3VXCR