Leave your questions here in the chat, (live during the event) or in the Reddit AMA here:
WATCH: To refute climate change deniers, focus on positive teaching, science expert says
PBS NewsHour Video12/1097
PBS NewsHour Video12/10
People Human Interest
CNN
KPAX
Kansas City Public Radio
KCRG Iowa
AlterNet
NBC10 Philadelphia EntertainmentLooks like you've reached the bottom