Fossils from New Zealand reveal the existence of a giant petrel with a wicked sharp beak that lived 3 million years ago.
The discovery of a hidden primordial black hole, which formed just 750 million years after the Big Bang, suggests that it may be the 'tip of the iceberg' of the cosmic monsters hiding in the early universe.
If humans suddenly disappeared and our pets had to fend for themselves, could dogs survive in a world without people?
If wormholes exist, they might magnify distant objects according to Einstein's theory of relativity — and that makes it possible for us to find them, new research suggests.