By Justin Catanoso In a major new study, a team of scientists has published what it calls the first-ever, map-based assessment of existing mature and old-growth forests in the continental United States. Such forests are critical to fighting climate change and data like this is deemed vital to President Biden’s climate action agenda. But the new research also shows how much mature forests on both federal and private lands in the U.S. are seriously at risk — offering a conservation opportunity to the Biden administration. The peer-reviewed study, published in Frontiers in Forests and Global Chan…