Climate change could cause severe crop losses in South Asia and southern Africa over the next twenty years, a study in the journal Science says.

The findings suggest southern Africa could lose more than 30% of its main crop, maize, by 2030.


In South Asia losses of many regional staples, such as rice, millet and maize could top 10%, the report says.

The effects in these two regions could be catastrophic without effective measures to adapt to climate change.