For more than a century, scientists have wondered why physical structures like blood vessels, neurons, tree branches, and other biological networks look the way they do. The prevailing theory held ...

Roku devices are quite convenient if you're looking for a wide array of TV shows, movies, and more to watch, and there are many great Roku streaming apps other than Netflix. For the majority of users, ...

AI-generated images, old videos and altered photos proliferated on social media in the hours following former Venezuelan President Nicolás Maduro's capture. Several of these images quickly went viral, ...

After an Afghan national was charged in the shooting of two National Guardsmen in Washington just before Thanksgiving, President Trump’s administration revived his earlier calls for something that to ...

CNET staff -- not advertisers, partners or business interests -- determine how we review products and services. If you buy through our links, we may earn a commission. Home security doesn't have to ...

Learn about the basics of blood pressure and high blood pressure: an overview of risk factors, causes, diagnosis, and treatment. Find out what the top and the bottom blood pressure numbers mean, and ...