Weekend Hotlist

The Freezing Hot Summer Kickoff, running today through Sunday at the Carnegie Science Center, will feature firewalkers, solar observation and freezing demonstrations.

Today, the USS Requin will shoot snowballs into the river with slingshots, cannons and catapults. Those who saved a snowball over the winter and bring it to the Carnegie Science Center will get free admission.

On Friday, people will get free samples of chilled products courtesy of WISH 99.7. Visitors will be able to view the sun with telescopes and NASA's Solar Terrestrial Relations Observatory satellites. The Kitchen Theater will show the chemistry of fire with fruit flambees. In the Works Theater, Liquid Nitrogen will be used on balloons and batteries to show chilling effects.

On Saturday and Sunday, David and Raven Willey will walk down a path of red-hot coal at 5 p.m.
source:www.post-gazette.com