The shots should still help prevent severe disease.
The mysterious presence of mantle materials more than 1,000 miles (1,609 km) from where they originated may be explained by a 'window' 62 miles (100 kilometers) below the Earth's surface.
If humans suddenly went extinct, what animals are most likely to develop human-like societies?
The millipede has over 1,300 legs and was found deep underneath Western Australia.