evidence: Moskowitz said he landed in this field of research in 2009, when his department at Berkeley hosted a South Korean cancer researcher who studied the risk of tumor growth from cell phone radiation exposure. Since then, he has maintained a website where he compiles links to volumes of scientific studies across the globe on the dangers of RF radiation coming from 5G on human and animal health. [...] Her 2018 research paper on the potential hazards of 5G, published in Environmental Research, reviewed relevant electromagnetic frequencies, exposure standards, and current scientific literature on the health implications of 2G, 3G, and 4G exposure, including some of the available literature on 5G frequencies. Russell questioned what elements of this technology constitute a public health issue. She concluded that: "Although 5G technology may have many unimagined uses and benefits, it is also increasingly clear that significant negative consequences to human health and ecosystems could occur if it is widely adopted. Current radiofrequency radiation wavelengths we are exposed to appear to act as a toxin to biological systems.