Wildfire smoke makes some trees hold their breath, researchers find

Most modern research into wildfire smoke’s effects has focused on crops, and the results have been conflicting.

When wildfire smoke is in the air, doctors urge people to stay indoors to avoid breathing in harmful particles and gases. But what happens to trees and other plants that can’t escape?

They may respond a bit like us, it turns out: Some trees essentially shut their windows and doors and hold their breath.