Science cafes have sprouted in almost every state including a tapas restaurant near downtown Orlando where Sean Walsh, 27, a graphic designer, describes himself and his friends as some of the laymen in the crowd.
But we're also socializing and having a nice time," said Walsh, who a drank beer, ate Tater Tots and learned a little about asteroids and radiation at two recent events.
Others in the crowd come with scientific credentials to hear particular scientists lecture on a narrowly focused field of interest.
"You're going to engage the (National Public Radio) crowd very easily here," said Linda Walters, a marine conservation biologist from the University of Central Florida who has lectured twice at the Orlando-area science cafes.
Haddad said the current national push to increase the number of U.S. graduates in science, technology, engineering and math, or the STEM fields, is driving up the number of science cafes.
In Orlando, an Orange County STEM Council consisting of business, government and educational leaders recently asked Haddad to help two interested parties launch new science cafes in the downtown library and in a large new town development.
The U.S. science cafe movement grew out of Cafe Scientifique in the United Kingdom. The first Cafe Scientifique popped up in Leeds in 1998 as a regularly scheduled event where all interested parties could participate in informal forums about the latest in science and technology.
Haddad said his hope for the cafes is to engage the public and generate excitement about the STEM fields that might filter down to the next generation.
"My feeling is STEM begins at home, with students who are being brought up by parents or relatives who have some interest in science and may encourage them to do that," Haddad said.
Attending a cafe does not guarantee a speaker as engaging as the popular host of television programs Bill Nye the Science Guy, as Walsh learned when he got lost in the extensive jargon of one lecture.
"I don't know that every scientist is gifted with the ability to work a crowd as well as deliver a lecture on targeted radiation therapy for tumors," said Walsh. "If you can find one that hits both those things, they should have their own television show."