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Extracts include a programme about oil exploration in Alaska

The boming of Hiroshima remembered 50 years on, plus other highlights of the week

Extracts include a look at the Japanese nuclear power industry

Aaron Copland centenary tribute and other highlights from the week's programmes

Extracts include the writer of 2001 on the future of artificial intelligence

Extracts include a visit to Afghanistan to see the damaging effects of ongoing war

Extracts include a look at the ebola outbreak in Gulu, Uganda

Extracts include a look at peace and reconciliation efforts in Northern Ireland

Extracts include a look at how robots will commune with humans in the future

Extracts include a look at what Russians think of Putin

Gioconda Belli talks about why she joined the Sandinistas in the fight against Somoza

Extracts include a look at Pinochet's use of torture in Chile

Extracts include a look at city life in Singapore, 'the most modern city in the world'

Extracts include 'Ebola Attack' a play about Matthew Lukwiya