Environmental Health Trust (EHT), the scientific think tank headed by Devra Davis PhD, MPH, filed its principal brief in the U.S. Court of Appeals for the District of Columbia on July 31, 2020 in a landmark case against the Federal Communications Commission (FCC). The appeal is aimed at getting the FCC to reconsider, revise, and update its 24-year old exposure limits for radio-frequency radiation (RFR) from cellphones, cell towers, Wi-FI networks, smart meters, and other wireless communication devices and facilities.