Every morning before Saba Sahar leaves for work, she loads her pistol, says her prayers and kisses her family goodbye, knowing she might never see them again.

Here in Sudan's Nuba Mountains the war isn't nearly over. It's escalating as skirmishes between north and South Sudan become bigger battles. The war is widening and more people are dying - and one day we will ask whether we did enough to stop it.

The Miskito people of Honduras's legendary Mosquito Coast aren't being endangered by any infectious outbreak. They are being killed and left paralysed in their thousands because of the demand for affordable luxury in the US and Europe. Ever since multinational seafood suppliers started exporting Caribbean spiny lobster on an industrial scale, lobsters disappeared from the shallows. The divers now plunge as deep as 150ft, 12-15 times in day, scrambling on the sea bed for their catch with basic and often faulty equipment. With no air or depth gauge, they have no way of knowing how far they are diving, and can only tell if their tank is running low when it becomes difficult to breathe.

The frantic call from the lookout comes at 6am: a few hundred members of the security forces and the dreaded shabiha militia, dressed in black, wielding guns and clubs, are marching towards the safe house in which we are hiding. They are raiding homes, looking for defected soldiers, opposition activists and anyone who's been at a protest. That means nearly half the town of Madaya. And we happen to be with three of the most wanted men in Syria.

Hundreds of secret hospitals are operating underground in Syria, treating injured protesters and opposition members, as a brutal crackdown against pro...