Science on Tap is a monthly science café in Philadelphia for anyone who is interested in getting together with other people to discuss a range of engaging science topics.

It's held at National Mechanics, a relaxed, convivial bar in Old City, and features a brief, informal presentation by a scientist or other expert followed by lively conversation.

Although often thought of as nuisance organisms, algae are vital to everyday life. Please join us for a talk all about algae by Charles Delwiche, Professor (and Affiliate of Department of Biology and Cell Biology and Molecular Genetics) at the University of Maryland. The term “algae” refers to a set of distantly related organisms that are united by their capability for oxygen-evolving photosynthesis. Often neglected, these organisms include the primary producers that dominate oxygen production and carbon dioxide consumption world-wide. Many are fascinating and beautiful (albeit microscopic) organisms, and studying them can give clues to the earliest evolution of life on Earth, and suggest strategies for coping with some of the world’s most pressing problems.

Presented by American Philosophical Society.