Original sentence: In the 21st Century, questions about the environment have become increasingly politicized, with the Left generally accepting the findings of environmental scientists about global warming, and many on the Right vigorously disputing those findings
Edited sentence: In an ideal world, scientific questions would be settled by observation and experiment.In the 21st Century, however, questions about the environment have become increasingly politicized, with the Left generally accepting the findings of environmental scientists about global warming, and the Right vigorously disputing those findings