In this follow-up "Ask a Scientist" video, Michael Wehner answers your questions about about droughts, heat waves, extreme weather, and climate change. Michael is a climate scientist in Berkeley Lab's Computational Research Division. He uses high-performance computing to study extreme weather events in a changing climate. He invited people to send in questions in this August 13, 2012 video: youtu.be/l3elhydklrQ Go here to see previous "Ask a Scientist" videos: www.youtube.com/playlist?list=PLA6A4CD0569C80F81 And if you have a burning question about science, send ideas for other "Ask a Scientist" videos to askascientist "at" lbl.gov or post them below.