If you are a cryogenic engineer you are interested in how materials behave at ultra-cold temperatures. As part of the Cambridge Science Festival, you can join cryogenic engineer Dhananjay Ravikumar for a virtually interactive look into what actually makes his job at MIT’s Plasma Science and Fusion Center so "cool." In the process, watch the effects of liquid nitrogen on substances you might encounter in your day-to-day lives (like the veggies in your salad). You can also get a peek into the curious world of “superfluids,” which spontaneously flow out of containers, act as if they have no friction and can even flow through the container that's holding it! Register here.