Massive Science celebrates love, nature-style
Flowers, chocolate, and light-based mating dances
Meet Helia Bravo Hollis, a Mexican botanist and conservationist
"La maestra Bravo" was an expert on desert plants. She's our science valentine.
Meet Margaret Hamilton, who established "software engineering" and powered astronauts
She programmed the Apollo missions all the way to the moon -- by hand. She's our science valentine.