The massive
wave of migration was perhaps equivalent to
over a quarter of the then population of the Horn of Africa, which hit the area and then
dispersed genetically across the north east part of the continent.
Two years ago this month, an edge - pushing environmental entrepreneur and a company formed by a Native Canadian village set off a
wave of international protest by
dispersing a pink slurry of 100 tons of iron - rich dust
over one of the 60 - mile - wide ocean eddies that routinely drift across the salmon feeding grounds of the Gulf of Alaska.