Hi, I am now learning about climate change and have come across resonance. When I previously studied SHM however, I learned about resonance, and I believe I have a good understand of what it means. If the frequency of a driving force matches the natural frequency of the system, this leads to a better absorption of energy by the system, resulting in large amplitude oscillations. But I am confused regarding how resonance is related to how atoms absorb energy. How is infrared radiation a driving force? The energy transferred leads to an increase in temperature which forces the molecules to vibrate at their natural frequency? Any ideas? Thanks!