The Lake Turkana area in Kenya's Rift valley is considered the cradle of mankind. On the surface, life in this semi-arid remote land appears to have changed little in centuries. But now with locusts swarms and fears about Covid-19, suddenly everything has changed, as Horatio Clare has been finding.

In Papua New Guinea's central highlands region, two tribal communities have been fighting each other over ownership of a large coffee plantation. Violence has flared up, and some have committed atrocities. There is only one policeman for the whole region. And now he has handed in his notice, as Charlie Walker reports.

We have all been told to wash our hands to avoid infection with the coronavirus. But as Bethany Bell reports, when hand-washing was first introduced in a hospital setting by Dr Semmelweis, an obstetrician in Vienna, in the nineteenth century, it was controversial and seen as downright subversive.

Moscow has been living under lockdown like many other places. One of the shops Steve Rosenberg has been missing the most, is his old newspaper kiosk. Imagine his delight when he suddenly found it had reopened. And after weeks of isolation, it wasn't the newspapers that he was most pleased to see again.

Presenter: Kate Adie

Producer: Arlene Gregorius