Humans are driving the loss of entire branches of the "Tree of Life," according to a new study published on Monday which warns of the threat of a sixth mass extinction. "It is a really significant contribution, I think the first time anyone has attempted to assess modern extinction rates at a level above the species," Robert Cowie, a biologist at the University of Hawaii who was not involved in the study, told AFP.
"As such it really demonstrates the loss of entire branches of the Tree of Life,
What exactly is your point?