AfricaLink on Air - 11 June 2015: 0705 UTCChrispin Mwakideu06/11/2015June 11, 2015Zimbabwe goes to the polls to elect 21 MPs in a by-election +++ 26 African nations sign a free-trade pact encompassing half the continent +++ HRW calls on Ghana to protect children from artisanal mining activitieshttps://p.dw.com/p/1FejtAdvertisement