This is the problem when you have a researcher in charge of this site...
Apparently Science SLAMS followed in the footsteps of Poetry SLAMS and began in Germany a few years back. This is taken from an article on Science SLAMS:
The format started in Germany in 2006, as a way to encourage scientists to not just focus on sharing the results of their immediate research, but also on the topic as a whole, in "an understandable, entertaining, and concise way," according to the movement’s official webpage in Germany.
We at CREATE encourage all manners of project SLAM - Arts & Humanities, Science, Social Science, Education, Management, Health, Trades - if it is a project, it can be shared via a SLAM.