As a further argument, Ford pointed out that a recently-published tree of life that was based on proteins that hadn't undergone horizontal gene transfer was built using only 31 proteins.

NPR's Scott Simon asks science writer David Quammen about horizontal gene transfer and how it changes how we think about humankind's place in the world. Quammen's new book is The Tangled Tree.

Sapsuckers make lots of small holes in horizontal or ... Our trees can be one of the most important and valuable plants in our landscapes. For a wounded tree, splash 3% hydrogen peroxide ...

The tree, back left, which fell on the house. Credit: Google The council's arborist rejected the application, saying the tree was in good health and condition, with no structural faults.

NPR's Scott Simon asks science writer David Quammen about horizontal gene transfer and how it changes how we think about humankind's place in the world. Quammen's new book is The Tangled Tree.