Mugabe's policies are widely blamed for Zimbabwe's economic decline over the past two decades. Millions of economic refugees have left the country, with most going to South Africa.
"Sometimes we can get so caught up in focusing on the soul and our prayer, which is incredibly important, but we also need to take care of our physical bodies."
The pope said the Paris agreement is "a clear path of transition toward a model of low- or no-carbon economic development, encouraging solidarity and emphasizing the strong links that exist between fighting climate change and fighting poverty."