Maker Field Day
Crafty and wacky creators of the city unite to compete for bragging rights. 3pm. The Franklin Institute, 222 N. 20th St.
What Can Fuel Cells Do for You?
Been feeling the pangs in your pocket? Philly’s leaders in engineering talk about fuel cells, a possible alternative to fossil fuel. 6:30pm. Dark Horse Pub, 421 S. 2nd St.
Picturing the Universe
The Lyrid meteors will streak across the sky behind a half-moon, with Saturn and Mercury visible to the naked eye. See them through Penn’s powerful professional telescope. 8pm. David Rittenhouse Lab Observatory at UPenn, 209 S. 33rd St.
Urban Sustainability Forum: City Council Candidates
The weird and wacky world of city council elections gets even wackier when it comes to talking about their positions on the environment, natural resources and sustainability. OK, it won’t be very weird or wacky, but residents of Districts 6-10 will learn about their candidate’s positions on greening Philadelphia. 6pm. The Academy of Natural Sciences, 1900 Benjamin Franklin Parkway.
In the Mouth of a Lion: The Sensory World of Animals
Learn about why cats love eating the things they do while dining on fare like beer-braised pork belly and barbeque octopus sticks for $10. 6pm. Rembrandt’s, 741 N. 23rd St.
From Hops to Stein: The Science of Beer
No Philly festival would be complete without an event centered on beer. Learn how it’s brewed and how we taste it, and try the Science Festival craft. 7pm. $20. Yards Brewery, 901 N. Delaware Ave.
Sam Kean’s Science Cabaret
A throwback to loveable mad scientists, author Sam Kean will blur the lines between science and magic during this eye popping event. 6pm. $15. The Chemical Heritage Foundation, 315 Chestnut St .
PW's Weekend Picks: July 25-27
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