Freedom to Succeed, Freedom to Fail
Current Issue: 10 Years of EXROP
What did the Earth look like 250 million years ago?
A catalyst is a substance that greatly accelerates a chemical reaction and yet does not directly participate in the reaction and is therefore not consumed. Dr. Cech uses a penny and a beaker of acetone to illustrate how a catalyst works.
HHMI’s science magazine explores biomedical research through in-depth features, news, and perspectives.
Free resources for science teachers and students, including animations, short films, and apps.
HHMI’s production company creates science films for broadcast, cinema, and digital media.
HHMI’s innovative research center where scientists pursue challenging problems in a collaborative setting.
Browse and order from HHMI’s free, award-winning library of publications and films.
