Executive Editor David Carnoy has been a leading member of CNET's Reviews team since 2000. He covers the gamut of gadgets and is a notable reviewer of mobile accessories and portable audio products, ...

What is the best slide projector? Slide projectors have been around for well over a century, providing the opportunity to take images and display them on a bigger screen for clearer viewing.

We may earn revenue from the products available on this page and participate in affiliate programs. Learn more › As far as we know, time travel isn’t possible, but our photos tell another story. We’re ...