Eric Walker added Culprit for Mass Extinction 445 Million Years Ago? Global Warming - The New York Times to a number of topics
Eric Walker added Thiomersal and Organomercury - Wikipedia to Organomercury, and added Organomercury to Mercury (chemical element) and Organometallic compounds
Eric Walker added Cinnabar - Wikipedia and Collections: Clothing, How Did They Make It? Part IVa: Dyed in the Wool – A Collection of Unmitigated Pedantry to Cinnabar, and added Cinnabar to Mercury (chemical element) and Sulfur
Eric Walker added a number of topics and We found a new type of stellar explosion that could explain a 13-billion-year-old mystery of the Milky Way's elements and Is It Time to Upend the Periodic Table? - The New York Times to Chemical elements, and added Chemical elements to Chemistry and Atoms, molecules, chemicals, minerals, materials and compounds
Eric Walker added Organomercury and Cinnabar and Culprit for Mass Extinction 445 Million Years Ago? Global Warming - The New York Times and Large amounts of mercury discovered in Greenland′s glaciers | Science| In-depth reporting on science and technology | DW | 18.06.2021 to Mercury (chemical element), and added Mercury (chemical element) to Chemical elements