In reality, carbon dioxide is the miracle molecule without which most life on Earth would cease to exist. It enables plants of all kinds to convert soil nutrients and water into the fibers, fruits and seeds that are essential to humans and animals. The more CO2 in the air, the faster and better plants grow, and the more they are able to withstand droughts, disease, and damage from insects and viruses. In the process, crop, forest and grassland plants, and ocean and freshwater phytoplankton, exhale the oxygen we breathe.
They believe in fake science.