sabine

But those numbers reflect national production around the world and could conceal declines within specific regions, said FAO economist Sabine Altendorf.

Dr Sabine Hildebrandt, a lecturer at Harvard Medical School with a keen interest in the ethics of the period, told the BBC it was an "excruciating fact" that removing tissue after death was not unusual.

The re-investigation, called Operation Sabine, was ordered by Scotland's top law officer in September.

Sabine Fischlin, manager of the Woollen Mill on the Royal Mile, said the situation had been getting "significantly worse" since August.

The next stage - swarm engineering - is about making many robots work together in real world applications, says Prof Sabine Hauert from the University of Bristol, one of the project partners.