Time on this earth was precious to her. Her zest for life will be celebrated at the second annual Butterfly Ball from 6 p.m. to 10 p.m. on Sept. 16 at the Greater Pittsburgh Masonic Center in Ross.

As he paged through a science magazine, he was stopped by an article on how butterflies generate color in their wings. The brilliant iridescent blue of the various Morpho species, for example ...