CHIKWAWA, MALAWI - SEPTEMBER 09: People gather for food distribution outside a school in the village of Malikopo, which lies in one of the areas most affected by drought, on September 9, 2016 in Chikwawa, Malawi. Drought associated with the El Nino weather pattern has created famine throughout Southern Africa with over 60 million dependent on food aid. (Photo by Andrew Renneisen/Getty Images)

CHIKWAWA, MALAWI - SEPTEMBER 09: People wait in line for food aid at a school in the village of Malikopo, which lies in one of the areas most affected by drought, on September 9, 2016 in Chikwawa, Malawi. Drought associated with the El Nino weather pattern has created famine throughout Southern Africa with over 60 million people dependent on food aid. (Photo by Andrew Renneisen/Getty Images)

CHIKWAWA, MALAWI - SEPTEMBER 09: Women listen to a briefing on the food distribution process outside a school in the village of Malikopo, which lies in one of the areas most affected by drought, on September 9, 2016 in Chikwawa, Malawi. Drought associated with the El Nino weather pattern has created famine throughout Southern Africa with over 60 million dependent on food aid. (Photo by Andrew Renneisen/Getty Images)

CHIKWAWA, MALAWI - SEPTEMBER 09: A woman rides a bike in the village of Malikopo, one of the areas affected most by drought, on September 9, 2016 in Chikwawa, Malawi. Drought associated with the El Nino weather pattern has created famine throughout Southern Africa with over 60 million dependent on food aid. (Photo by Andrew Renneisen/Getty Images)

CHIKWAWA, MALAWI - SEPTEMBER 09: People walk and cycle in the village of Malikopo, which lies in one of the areas most affected by drought, on September 9, 2016 in Chikwawa, Malawi. Drought associated with the El Nino weather pattern has created famine throughout Southern Africa with over 60 million dependent on food aid. (Photo by Andrew Renneisen/Getty Images)

LONDON, ENGLAND - SEPTEMBER 14: Swimmers enjoy an early morning dip shortly before sunrise in the Serpentine in Hyde Park on September 13, 2016 in London, England. Areas in the South East of England continue to enjoy seasonable weather. (Photo by Dan Kitwood/Getty Images)

LONDON, ENGLAND - SEPTEMBER 14: Horse riders from Hyde Park Barracks trot through Hyde Park at sunrise on September 13, 2016 in London, England. Areas in the South East of England continue to enjoy seasonable weather. (Photo by Dan Kitwood/Getty Images)

LONDON, ENGLAND - SEPTEMBER 14: Horse riders from Hyde Park Barracks trot through Hyde Park at sunrise on September 13, 2016 in London, England. Areas in the South East of England continue to enjoy seasonable weather. (Photo by Dan Kitwood/Getty Images)