Heavy metals is improved with the addition of thorium. Tellurium is added to copper and steel alloys to improve their machinability; and to lead to make it harder and more acid-resistant. The biocidal effects of some heavy metals have been known since antiquity. Platinum, osmium, copper, ruthenium, and other heavy metals, including arsenic, are used in anti-cancer treatments, or have shown potential. Antimony (anti-protozoal), bismuth (anti-ulcer), gold (anti-arthritic), and iron (anti-malarial) are also important in medicine. Copper, zinc, silver, gold, or mercury are used in antiseptic formulations; small amounts of some heavy metals are used to control algal growth in, for example,
King of the Road (skateboarding) The 2017 teams were announced July 6, 2017. Team Element was the winner. Evan Smith was the MVP. This season of King of the Road aired in 2018 as eleven hour-long TV episodes on the VICELAND channel and the Thrasher website. King of the Road (skateboarding) The title of King of the Road is given out once a year by "Thrasher" magazine. The tradition was started in 2003 and has been one of the premier skateboarding contests in the USA. In the King of the Road (KOTR) contest, a group of pre-invited teams of professional skaters are each given a