The problem is that the climate scientists are not good at publicizing their warnings about climate change. And the fossil fuel interests have been fighting tooth and nail against any action that will cut into their profits or even threaten their existence. The technology needed to deal with climate change exists. We need to start retrofitting electric power plants (coal and gas only) with carbon capture modifications. At the same time, we need to build carbon removal plants at many locations around the world. Yes, it will cost trillions of dollars over decades, but the cost of inaction will be much greater. We just need the politicians to act, but they won't until enough people wake up and push for action. Greta is carrying and publicizing the climate scientists' message, and waking up people. I think the significance of her efforts cannot be overstated.