International efforts to help Haiti in the wake of the 7.0 magnitude earthquake are under way, with governments across the world and aid agencies mobilising search and rescue teams and aid supplies.Map showing population exposure from here
Although the full scale of the disaster has yet to emerge, it is clear that it will pose a huge challenge.
Haiti, the poorest country in the western hemisphere, is still struggling to recover from devastating hurricanes in 2008.
It needs all kinds of help, from emergency and medical aid, to food aid, to the longer-term rebuilding of infrastructure.
Best way to flow massive amounts of aid is by sea.