What happens if there is a persistent drought, as happened in the 1930's?

Four of eight local mining companies have closed in the last year here, and a persistent drought has slowed a transition to grape farming.

He questioned whether such widespread and persistent drought could be inferred from local soil conditions at a few sites.

The heavy rainfall helped to relieve a persistent drought, bringing vegetation back to life.

Over the past 40 years, persistent drought has forced many Tuareg to give up their nomadic way of life.

The persistent drought and heat wave have further decreased soil moisture to below 98-99% of normal levels.

The rainfall helped to relieve a persistent drought which had existed for several months.

Residents were evacuated in 1963, due to persistent drought and the declining copra market.

Gov. Angus King is appealing the federal government's refusal to give disaster relief to families affected by a persistent drought.

One environmental theory that explains Nauru's persistent drought is called the oven effect.