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Massive investigation operation follows London attack

Forensics and intelligence evidence will underpin efforts to find those responsible for London's worst ever terrorist attack

Humans

Will DNA profiling fuel prejudice?

Editorial: Your DNA in their hands

Technology

Colour profile exposes faked or stolen gems

Technology

3D animation gives evidence more bite

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Peckish pilferers caught out by snack attack

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‘Sperm clock’ could pinpoint time of a rape

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DNA tests end for 9/11 victims

Space

Columbia crew member’s diary survived disaster

Earth

Scale of tsunami tragedy complicates DNA matching

With so many bodies, the difficult identification process is slow and the risk of a false match is much higher, say experts

Tests to find gene cheats

Cyber detective links up crimes

The killer with no name

Technology

Digital technique reveals fake art