Understanding La Niña

There’s a great article by IRIN today about La Niña, the cyclical weather system which has been blamed by many for extreme weather events around the world in the past few months. Apparently the current La Niña cycle is one of the strongest in the last century – but what exactly is it, and why is it happening?

Unpacking La Niña looks at what causes the phenomenon, and how it has had such far-reaching – and sometimes devastating – effects.