EXCLUSIVE: The Discovery networks have picked up two mystery docuseries after striking a deal with Big Media. Greatest Mysteries Ever and Alien Files: Reopened will air on the Warner Bros.

Our world is changing. Temperatures are climbing. Ocean levels are rising. Giant storms are becoming more frequent and intense. Super-viruses are thriving in this new environment. At the same time, ...

They're our first line of defense in the darkest of times. And they're often the first responders to threats from another world. Over the past 70 years the world's military forces have come face to ...