The obvious issue is providing clean drinking water and sanitation to every single human being on earth at the cost of little more than one year of the Kyoto treaty. ↗
My doctor asked me if I smoked, and I said only when I'm working, golfing, or drinking. Then I realized the only time I don't smoke is when I'm home. I didn't even realize I'd become a smoker. ↗
For me, one of the important things about keeping vocally healthy is warming up and making sure I'm aware where my voice is at, drinking lots of water and getting plenty of sleep, and just taking care of myself with exercise and eating healthy. ↗