TOPSHOT - This aerial view shows hippos stuck in a dried up channel near the Nxaraga village in the Okavango Delta on the outskirts of Maun on April 25, 2024. A drought across southern Africa has been driven mostly by the El Nino weather pattern, not climate change, scientists said. Zambia, Zimbabwe and Malawi have declared a national disaster over the severe dry spell that started in January and has devastated the agricultural sector, decimating crops and pastures. Scientists at the World Weather Attribution (WWA) research group found global warming had little to do with it. In a study focusing on Zimbabwe, Botswana, Zambia and Mozambique, researchers analysed historical weather data for the period from December to February -- the peak of the rainy season. They found rainfall has actually increased in the region as the planet warms. But effective precipitation has remained the same, likely because higher temperatures lead to more water evaporation, they said. On the other hand, El Nino, a recurring natural weather phenomenon, brought fewer showers, increasing the likelihood of severe droughts, the data showed. (Photo by Monirul Bhuiyan / AFP) (Photo by MONIRUL BHUIYAN/AFP via Getty Images) *** BESTPIX ***

TOPSHOT - A girl and a boy carry a piece of furniture after visiting their house that was destroyed by floods following torrential rains at the Mathare informal settlement in Nairobi, on April 25, 2024. Torrential rains triggered floods and caused chaos across Kenya, blocking roads and bridges and engulfing homes in slum districts. The death toll from flash floods in Kenya's capital Nairobi has risen to 13 on April 25, 2024, police said. Kenyans have been warned to stay on alert, with the forecast for more heavy rains across the country in the coming days. (Photo by LUIS TATO / AFP) (Photo by LUIS TATO/AFP via Getty Images) *** BESTPIX ***

TOPSHOT - A man carries some belongings while walking on muddy waters in an area heavily affected by floods following torrential rains at the Mathare informal settlement in Nairobi, on April 25, 2024. Torrential rains triggered floods and caused chaos across Kenya, blocking roads and bridges and engulfing homes in slum districts. The death toll from flash floods in Kenya's capital Nairobi has risen to 13 on April 25, 2024, police said. Kenyans have been warned to stay on alert, with the forecast for more heavy rains across the country in the coming days. (Photo by LUIS TATO / AFP) (Photo by LUIS TATO/AFP via Getty Images) *** BESTPIX ***

Hippos stand next to other hippos stuck in a dried up channel near the Nxaraga village in the Okavango Delta on the outskirts of Maun on April 25, 2024. A drought across southern Africa has been driven mostly by the El Nino weather pattern, not climate change, scientists said. Zambia, Zimbabwe and Malawi have declared a national disaster over the severe dry spell that started in January and has devastated the agricultural sector, decimating crops and pastures. Scientists at the World Weather Attribution (WWA) research group found global warming had little to do with it. In a study focusing on Zimbabwe, Botswana, Zambia and Mozambique, researchers analysed historical weather data for the period from December to February -- the peak of the rainy season. They found rainfall has actually increased in the region as the planet warms. But effective precipitation has remained the same, likely because higher temperatures lead to more water evaporation, they said. On the other hand, El Nino, a recurring natural weather phenomenon, brought fewer showers, increasing the likelihood of severe droughts, the data showed. (Photo by Monirul Bhuiyan / AFP) (Photo by MONIRUL BHUIYAN/AFP via Getty Images)

A tourist campsite operator hangs clothes on the fence where traditional boats are seen in a dry channel where they use to use boat near the Nxaraga village in the Okavango Delta on the outskirts of Maun on April 25, 2024. A drought across southern Africa has been driven mostly by the El Nino weather pattern, not climate change, scientists said. Zambia, Zimbabwe and Malawi have declared a national disaster over the severe dry spell that started in January and has devastated the agricultural sector, decimating crops and pastures. Scientists at the World Weather Attribution (WWA) research group found global warming had little to do with it. In a study focusing on Zimbabwe, Botswana, Zambia and Mozambique, researchers analysed historical weather data for the period from December to February -- the peak of the rainy season. They found rainfall has actually increased in the region as the planet warms. But effective precipitation has remained the same, likely because higher temperatures lead to more water evaporation, they said. On the other hand, El Nino, a recurring natural weather phenomenon, brought fewer showers, increasing the likelihood of severe droughts, the data showed. (Photo by Monirul Bhuiyan / AFP) (Photo by MONIRUL BHUIYAN/AFP via Getty Images)

This aerial view shows hippos stuck in a dried up channel near the Nxaraga village in the Okavango Delta on the outskirts of Maun on April 25, 2024. A drought across southern Africa has been driven mostly by the El Nino weather pattern, not climate change, scientists said. Zambia, Zimbabwe and Malawi have declared a national disaster over the severe dry spell that started in January and has devastated the agricultural sector, decimating crops and pastures. Scientists at the World Weather Attribution (WWA) research group found global warming had little to do with it. In a study focusing on Zimbabwe, Botswana, Zambia and Mozambique, researchers analysed historical weather data for the period from December to February -- the peak of the rainy season. They found rainfall has actually increased in the region as the planet warms. But effective precipitation has remained the same, likely because higher temperatures lead to more water evaporation, they said. On the other hand, El Nino, a recurring natural weather phenomenon, brought fewer showers, increasing the likelihood of severe droughts, the data showed. (Photo by Monirul Bhuiyan / AFP) (Photo by MONIRUL BHUIYAN/AFP via Getty Images)

TOPSHOT - This aerial view shows hippos stuck in a dried up channel near the Nxaraga village in the Okavango Delta on the outskirts of Maun on April 25, 2024. A drought across southern Africa has been driven mostly by the El Nino weather pattern, not climate change, scientists said. Zambia, Zimbabwe and Malawi have declared a national disaster over the severe dry spell that started in January and has devastated the agricultural sector, decimating crops and pastures. Scientists at the World Weather Attribution (WWA) research group found global warming had little to do with it. In a study focusing on Zimbabwe, Botswana, Zambia and Mozambique, researchers analysed historical weather data for the period from December to February -- the peak of the rainy season. They found rainfall has actually increased in the region as the planet warms. But effective precipitation has remained the same, likely because higher temperatures lead to more water evaporation, they said. On the other hand, El Nino, a recurring natural weather phenomenon, brought fewer showers, increasing the likelihood of severe droughts, the data showed. (Photo by Monirul Bhuiyan / AFP) (Photo by MONIRUL BHUIYAN/AFP via Getty Images)

People carrying pieces of meat walking through the dried channel near the Nxaraga village in the Okavango Delta on the outskirts of Maun on April 25, 2024. A drought across southern Africa has been driven mostly by the El Nino weather pattern, not climate change, scientists said. Zambia, Zimbabwe and Malawi have declared a national disaster over the severe dry spell that started in January and has devastated the agricultural sector, decimating crops and pastures. Scientists at the World Weather Attribution (WWA) research group found global warming had little to do with it. In a study focusing on Zimbabwe, Botswana, Zambia and Mozambique, researchers analysed historical weather data for the period from December to February -- the peak of the rainy season. They found rainfall has actually increased in the region as the planet warms. But effective precipitation has remained the same, likely because higher temperatures lead to more water evaporation, they said. On the other hand, El Nino, a recurring natural weather phenomenon, brought fewer showers, increasing the likelihood of severe droughts, the data showed. (Photo by Monirul Bhuiyan / AFP) (Photo by MONIRUL BHUIYAN/AFP via Getty Images)