Imagine a world without the internet, or GPS, MRNA vaccines or the touchscreen on your iPhone. The science and technology that have become integral to our daily lives may never have existed ...

'What's at stake is obviously the security of our nation,' NSA chief says of defending US from cyberattacks NSA Director Gen. Paul Nakasone spoke exclusively to ABC News.

The hard truth is this: as a nation, we’re just not as healthy, sharp or patriotic as we used to be — and our military recruitment has suffered. Here’s how to turn it around.