Trump warned Iran of massive retaliation if he is assassinated, claiming US strike orders are already in place. But can a US president legally leave military orders that survive their death? US ...

The most vexing question in physics right now is how general relativity – the laws that govern gravity and space-time on large scales – meshes with quantum mechanics, the laws that govern very small ...

Among the many animated series that have defined a generation, ‘Gravity Falls‘ remains one of the most carefully crafted and intellectually engaging. Created by Alex Hirsch and produced by Disney ...

The strongest force in the universe is called, aptly, the strong force. We never get to witness its fearsome power because it works only across subatomic distances, where it binds quarks together ...