The Zoo has been following the work of the Zoological Society of London and this evening it looks at the ground-breaking work being done at the Bedfordshire attraction involving chimps and heart surgeons.
Click above to watch ITV News Anglia's Olivia Paterson report
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Son and daughter of murdered Chelmsford woman Maria Stubbings have been giving evidence at the inquest into her death.
Mostly dry with clear skies tonight. A chilly start tomorrow with sunshine developing.
Mostly dry with bright or sunny spells