Scientists Are Trying to Bring Woolly Mammoths Back From the Dead. They Started With Mice.
created: March 6, 2025, 4:10 p.m. | updated: March 19, 2025, 5:36 p.m.
<p>Right now, we just have hair and fat—but it’s a start.</p>
9 months, 2 weeks ago: Latest Content - Popular Mechanics