We know why [they] want to make this important. It's so they can blame us, make us feel guilty, and then control us, charge us and confine us. Decades ago we got a poster at a museum that shows the history of the planet. For most of the time, CO2 concentration was in the thousands of ppm, not 300 - 400 ppm. We wouldn't thrive under the circumstances but the forests and dinosaurs were apparently doing great.