Hooked on Science: Bloody Handprint Local News by: Staff Posted: Oct 18, 2017 / 06:12 PM EDT / Updated: Oct 18, 2017 / 06:12 PM EDT Have you heard of goldenrod paper? It’s a special paper, when combined with baking soda and water-covered hand, turns blood red! Science guy Jason Lindsey and a kid scientist show us “the bloody handprint.”