This town talk will be presented by Derek Posselt, Principal Scientist, NASA Jet Propulsion Laboratory.

If you live on planet Earth, you have had to worry about the weather at some point. Most of us have heard some version of the expression: “If you don’t like the weather, wait 5 minutes, and it will change.” Many of us wish we had the ability to do something about it. This is not a new impulse. Humans have been trying to change the weather for over a century. Posselt will review the ways people have tried to modify the weather, what has worked (and what hasn’t), and whether it is, in fact, a good idea to try in the first place.