A SKYDIVER dropped his iPhone while at 10,000ft — and was stunned to then find it without a scratch. Footage shows the device fall from Casey Flay’s pocket as he leapt out of a plane for a ...

PBS Space Time is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV ... This is the dark forest hypothesis, and it’s the core idea of Liu Cixin’s book ...

Dark Forest shows how advanced cryptography can be used in a game—and how blockchains might host decentralized digital worlds. Start exploring in Dark Forest, and you quickly realize just how mu ...