If used in humans, these hybrid cells could have unknown effects on the body.

BBC: Stem cell research doubts

Robert Chalmers, 59, denies murdering Samantha Wright "by means unknown" and hiding her body in a garden bin.

BBC: Samantha Wright murder trial shown CCTV footage

But she was sure an unknown person put the bag containing his body into the bath and probably locked it, she said.

CNN: STORY HIGHLIGHTS

Yet scientists believe 120 or so remains a stubborn limit beyond which the human body cannot live without some serious - and so far unknown - genetic intervention.

BBC: NEWS | UK | Magazine | The 100+ club

SEARCH, a non-profit body in Tucson, collects wild plant varieties, including rare or unknown chiles.

ECONOMIST: A brief history of chile cuisine

"It will be an unknown location in the open desert, " he said, adding that a burial was needed because decomposition of the body had reached the point where the "corpse cannot last any longer".

BBC: Muammar Gaddafi 'buried in desert grave at dawn'