hot day in the city...

I'm pulling this question of the day out of the hazy air. Does sunscreen actually work or are Coppertone, Banana Boat and co. making a mint off our naivety? The reason I'm asking this question is because I think sunscreen is becoming more and more futile with the incessant depletion of the ozone layer. I hope everyone got a chance to tune into the Live Earth program on NBC last night that was suggesting that our world is in a global ecological crisis. I'm glad some people are finally opening their eyes.