Original sentence: "As soon as the scientific community began to come together on the science of climate change, the pushback began," argued University of California, San Diego historian Naomi Oreskes.Several think tanks partially funded by Exxon or, later, ExxonMobil that currently contest climate change have also reputedly received funding from Philip Morris such as the Competitive Enterprise Institute, the Cato Institute, the Heritage Foundation, the Hudson Institute, the Frontiers of Freedom Institute, the Reason Foundation, George Mason University's Law and Economics Center, and the Independent Institute
Edited sentence: "As soon as the scientific community began to come together on the science of climate change, the pushback began," according to  University of California, San Diego historian Naomi Oreskes.Several think tanks funded by Exxon or, later, ExxonMobil to contest climate change have also reputedly received funding from Philip Morris such as the Competitive Enterprise Institute, the Cato Institute, the Heritage Foundation, the Hudson Institute, the Frontiers of Freedom Institute, the Reason Foundation, George Mason University's Law and Economics Center, and the Independent Institute