The very disease that has decimated millions of American elms in the U.S. is now being used to bring the iconic trees back. A group of 6,000 young American el

The very disease that has decimated millions of American elms in the U.S. is now being used to bring the iconic trees back. A group of 6,000 young American elms were injected with Dutch elm disease spores to test their resistance. Read more: [↧](https://t.co/wiIA8ZTZZ…