Free power from an invisible source

In this video I show you there is enough free power in the air to momentarily power up a blue LED!

Two circuits used: rectenna (a rectifier connected to an antenna) and a joule thief.

My cat, Levi, unexpectedly joined me in the attic for this energy investigation.

Questions: What is pumping this energy into the air? The energy is obviously a form of radio wave, since it is captured by an antenna. What is the source of this electromagnetic radiation? Cell phone towers? 5G? Radio broadcasts? Wi-Fi internet? Smart meters? Are there adverse health effects to having this much electromagnetic energy surrounding us and going through us?

Download video (and share!)