These summer Science Cafés are for geared for kids. At 7 pm on June 19 at Worthington Park Library (1389 Worthington Centre Dr., Columbus, OH) Angie Miller will present on Cool Chemistry. She presents a series of demos which taught the children and their parents how much the atmosphere really weighs, about air pressure, and she even brought liquid nitrogen to pour over balloons; which, in end, freezes. Miller stated, “The air pressure demos are really relatable for kids and adults because they are really familiar with things like pressure, wind, boiling, space, etc., and I can use that as a jumping off point to teach them about some unfamiliar things.” Angie’s favorite part of the presentation is the end, where she calls upon 10 children to ask questions and/or see a demo again.