What does sound look like? How can rockets fly? Why are there different kinds of bees? These are examples of the questions scientists and researchers will be answering at the 2021 Virtual North Bay Science Discovery Day on March 13. Usually a very popular event featuring in-person presentations, this year’s Discovery Day will be virtual, with various speakers going online to demonstrate science experiments, give tours of local facilities, and offer instruction on hands-on projects. Check out the full list of presentations, and sign up for the free event at northbayscience.org/2021. Registrations must be received by March 12 at noon.