Fertilizer
NZ-bound fertiliser ship snagged in Saharan stoush
5 May 2017
A " very long-standing and complex political and geopolitical dispute" in the Western Sahara has seen a ship full of fertilizer, bound for New Zealand, stopped in South Africa. A 50,000 tonne… Audio
Algae, Phosphorus and Effluent
21 Nov 2013
Algae may be a way of extracting phosphorus from effluent ponds so it can be re-used as a fertilizer. Audio