- Researchers study leaves in many forests and sites.
- They measure how leaves reflect sunlight and color.
- Leaf light gives simple information about genes.
- Genes can show if a tree is stressed.
- Scientists test the same leaf for genes.
- This method can find problems early in trees.
- It is faster than many field checks and tests.
- Airplanes and satellites can measure leaf light from above.
- Maps from light could show forest health quickly.
- Early action can help protect trees and forests.
Difficult words
- leaf — flat green part of a plantleaves
- reflect — send light back from a surface
- gene — part of a cell that gives traitsgenes
- stressed — under pressure or not healthy
- method — a way to do a task
- satellite — a machine in space that takes picturessatellites
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Do you have trees near your home?
- Have you ever seen a forest from an airplane?
- Would you like maps that show forest health?
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