Welcome Back, Woolly Mammoth?

CAMBRIDGE, MASSACHUSETTS—The woolly mammoth went extinct about 4,000 years ago, probably due to climate change and human hunting. The Guardian reports that scientists think they may be able to create a hybrid mammoth-elephant embryo in two years through the use of the Crispr gene-editing tool. “Actually, it would be more like an elephant with a number of mammoth traits,” explained George Church of Harvard University. Those woolly mammoth traits include small ears, subcutaneous