"Climate change can affect our health, ability to grow food, housing, safety and work". (1) There is no doubt that steps are needed for the longevity of this planet .
“Earth’s Climate Has Always Been Changing. This is No Different.” In reality, Milankovitch cycles describe periods of hundreds of millennia, we’re seeing temperatures and CO2 concentrations rise to unprecedented levels in the space of just a couple hundred years. (3)
If global warming was due to the sun, all layers of our atmosphere would be warming. In fact, only the surface and lower atmosphere are warming (because CO2 and other greenhouse gases are trapping heat there); the upper layers, on the other hand, are cooling. (4)