UFO mystery as 'Dorito' shaped craft spotted hovering above top-secret Area 51 base

The peculiar object was heard omitting bizarre radio transmissions

Archaeologists discover 'remarkable' 500,000-year-old elephant bone tool on British soil

The material would have been exceptionally rare in prehistoric England

Viruses sent into space can still infect bacteria but evolve differently than on Earth

The findings could help improve therapies against drug-resistant infections

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