Atmospheric CO2 levels have passed 400 parts per million on a rising trajectory that promises worldwide climate disaster in a few decades. We cannot now escape certain terrible consequences, but there may still be time to avoid more.
Many experts see a revenue-neutral carbon tax as the best immediate step that has any real chance of affecting the changes underway. It would lead toward the abandonment of the burning of fossil fuels, the main source of atmospheric CO2. Now is the time for all citizens to write their representatives in Congress to press for a revenue-neutral carbon tax as well as for the more rapid expansion of solar and wind energy production and further strenuous efforts at energy conservation.