Mammals cannot evolve fast enough to escape current extinction crisis

The sixth mass extinction is underway, this time caused by humans. A team of researchers have calculated that species are dying out so quickly that nature's built-in defense mechanism, evolution, cannot keep up. If current conservation efforts are not improved, so many mammal species will become extinct during the next five decades that nature will need 3-5 million years to recover to current biodiversity levels. And that's a best-case scenario.

from Latest Science News -- ScienceDaily https://ift.tt/2QSPbyr