3I/ATLAS likely weighs more than 33 billion tons. The AI-powered collar acts as virtual dog trainer, says Cesar Millan. The most complete skeleton of a pachycephalosaur was found in Mongolia. The ...

Matt Elliott is a senior editor at CNET with a focus on laptops and streaming services. Matt has more than 20 years of experience testing and reviewing laptops. He has worked for CNET in New York and ...