Suzanne Maher says her group has bought more than 20 billboards across North America

Both Russ and Suzanne claim to have conducted their own scientific tests. Suzanne says she even tested her dog.
"I had my soil tested. I had my hair tested," she says. "I was toxic in aluminium, barium, strontium, arsenic, manganese. And I live very healthily." She says her dog has been poisoned by a radioactive metal.
Russ claims he found six times the safe levels of aluminium in his rainwater, and both say the tests are solid proof of atmospheric spraying.
It's not known what's behind those test results - and they couldn't be independently verified. Scientists, of course, disagree that there is any large-scale plot by governments to spread chemicals around the globe.
A 2016 study by the Carnegie Institute for Science and the University of California Irvine surveyed 77 leading atmospheric scientists and geochemists. All but one, 98.7%, reported no evidence of a secret large-scale atmospheric spraying programme. The one scientist who dissented recorded unusually high levels of atmospheric barium in a remote area with low levels of barium in the soil. But to get from that one result to the idea that we're being secretly sprayed with chemicals requires a monumental leap of faith.
"Our goal is not to sway those already convinced that there is a secret, large-scale spraying programme - who often reject counter evidence as further proof of their theories - but rather to establish a source of objective science that can inform public discourse," the study's authors wrote.
The conspiracy theorists won't be swayed.
"We have a long history in all countries of scientists believing things that we later realise are false," Russ contends. "It takes a very rare and brave person who steps out and goes against the flow.
"Whether or not people listen, that's up to them. But as for me - this is happening."