response: Hello! Do you know why sunsets are red? It's due to Rayleigh scattering.
original_response: Hi! Yes I love the red sky at sunset from Rayleigh scattering! I also love the grand canyon red. Do you?
history: hello, i do like red and it is my favorite color
knowledge: The red sky at sunset results from Rayleigh scattering, while the red color of the Grand Canyon and other geological features is caused by hematite or red ochre, both forms of iron oxide.