Yes, I have noticed it! The sun used to be a warm yellow, and that's how children (and grown-ups, too) depict it in drawings. When I point out to people that the sun has turned white, they don't seem interested, let alone alarmed. I guess they figure they just "misremember" it being yellow. "Misremembering" is the key word for those of us who recall a different reality, a different world. Something has gone very wrong with our world.