Eric Mack has been a CNET contributor since 2011. Eric and his family live 100% energy and water independent on his off-grid compound in the New Mexico desert. Eric uses his passion for writing about ...

Add Yahoo as a preferred source to see more of our stories on Google. A blue, green and white sphere surrounded by orange swirls. Scientists believe Earth may have briefly lost protection from the sun ...

Around two million years ago, Earth was a very different place, with our early human ancestors living alongside saber-toothed tigers, mastodons, and enormous rodents. And, depending on where they were ...