In November 2000, the first astronauts arrived on the International ... which were the ancestors of the Rift Valley apes and all humans, may never have flourished. The world might still be ...

Whilst vaccines exist for animals, none are commercially available for human use for the mosquito-borne virus.

Researchers believe that members of the human family - hominids - and African ... mainly based around the Great Rift Valley - a fracture in the earth's surfaces that runs 3,500 kilometres from ...

The team unearthed hundreds of stone tools made using a distinctive technique that helped early humans shape and sharpen ...