Want to watch better-quality PBS Video? Sign in to access HD streaming!
The presence of clouds and shadows mean plants live in a constantly changing world of light. Researchers have identified that plants can detect shadows but how do they do it and how do they maximize efficiency for capturing sunlight?
Upgrade Your Viewing Experience
This video is available to CallSign viewers with a Passport account. Passport gives you access to a wealth of premium content not previously available online, including full seasons of your favorite shows.