I am saddened to read of Joel's passing. I first met him when I was a student in his environmental science class at SUNY Delhi. True story: I challenged him with a smart alec comment about the composition of sea water. He said "You're right, but you're out of line!" and threw a piece of chalk at me! I deserved it. Later, we were colleagues when I began teaching there. I will always remember his wit, his deep intelligence, and his commitment to students. Rest in peace, Joel.