Eric Walker removed Leaded gasoline from Lead

Eric Walker placed Leaded gasoline under Tetraethyllead

Eric Walker placed Leaded gasoline under Lead

Eric Walker added Leaded gasoline to Petroleum as an energy source

Eric Walker added The Long Emergency to Petroleum as an energy source

Eric Walker added Private Equity Funds, Sensing Profit in Tumult, Are Propping Up Oil - The New York Times to a number of topics

Eric Walker added To Cut Emissions to Zero, U.S. Needs to Make Big Changes in Next 10 Years - The New York Times to Petroleum as an energy source

Eric Walker added ‘A Slap in the Face’: The Pandemic Disrupts Young Oil Careers - The New York Times to Petroleum as an energy source

Eric Walker added Big Oil Slammed With A $7 Trillion Reality Check | OilPrice.com to Petroleum as an energy source

Eric Walker added Insurance giant Suncorp to end coverage and finance for oil and gas industry | Environment | The Guardian to Petroleum as an energy source and Insurance

Eric Walker added Virginia Governor Ralph Northam - April to Petroleum as an energy source

Eric Walker added U.S. Dry Natural Gas Production (Million Cubic Feet) to Petroleum as an energy source

Eric Walker added PETROLEUM & OTHER LIQUIDS to Petroleum as an energy source

Eric Walker added Is This the End of Oil and Gas Pipelines? - The New York Times to a number of topics

Eric Walker added E.P.A. Limits States’ Power to Oppose Pipelines and Other Energy Projects - The New York Times to a number of topics

Eric Walker added a number of links to Petroleum as an energy source, and added Petroleum as an energy source to Fossil fuels and Crude oil and petroleum

Eric Walker added a number of topics and a number of links to Fossil fuels, and added Fossil fuels to Energy and energy policy

Eric Walker added a number of topics and a number of links to Crude oil and petroleum, and added Crude oil and petroleum to Hydrocarbons