The world’s trees are in critical danger, with a staggering number of tree species teetering on the brink of extinction, according to a new global analysis released Monday. The decade-long project ...

But thanks in part to trees planted in areas where the two fungi don’t grow well, the American chestnut isn’t extinct. And efforts to revive it in its native range have continued, despite the long ...

For the past two decades, Sara Fern Fitzsimmons has raised seedlings of the American chestnut in research orchards along the Eastern Seaboard, keeping them fed and hydrated and charting their growth.