Axon, dendrites, myelin — strange words squeak across a whiteboard as Heather Edwards labels a crude drawing that resembles a Medusa-headed alien from Star Trek. But this apparent work of science fiction is actually much more down to earth.
Read MoreShepherding Project Lifts Afghan Families From Poverty
In a small village in northern Afghanistan, Aq Mohammed keeps a watchful eye over a flock of sheep. Somewhere in the mud-walled pen holding a sea of white, brown and black wool are two ewes of particular importance to the 52-year-old father of seven.
Read More