Right now, you can buy the Amazon Fire HD 8 at Amazon for $64.99 (was $99.99) and it’s a great option for someone who wants a cheap tablet to entertain the kids or if you want something to do on ...

What is the structure of our physical reality? Physicists have long imagined space and time interweaving into “space-time”, the metaphorical fabric that underlies the cosmos. But there may be ...