For many years, we’ve known planting trees lowers greenhouse gas levels. But a new study from the University of Southern California focusing on central LA has found that our trees are working a LOT harder at reducing emissions than we thought. We speak with Will Berelson, a professor of Earth Sciences and Environmental Studies at USC.

<p>For many years, we&rsquo;ve known planting trees lowers greenhouse gas levels.&nbsp;But a new study from the University of Southern California focusing on central LA has found that our trees are working a LOT harder at reducing emissions than we thought. We speak with Will Berelson, a professor of Earth Sciences and Environmental Studies at USC.</p>

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