COSI training will lead to loud booms, possible clouds near Downtown

COSI will be conducting training on Feb. 25 that may result in loud booms and clouds of what looks like smoke visible near Downtown.

It's Only A Test! COSI festival preps to cause 'loud explosion sounds' Wednesday afternoon

Loud booms and other noises heard around COSI on Wednesday afternoon will be part of preparations for the upcoming COSI Science Festival, including behind-the-s ...