Watch Arnab in Conversation with Bjorn Lomborg - A Global Thought Leader | Nation Wants To Know

For more than a decade, annual data showed global hunger to be on the decline. But that has changed: According to the latest data from the Food and Agriculture Organization of the United Nations (FAO) hunger affected 815 million people in 2016, 38 million more than 2015, and malnutrition is threatening millions.

Jim Brown of CBC's The 180 interviews Dr. Bjorn Lomborg.

"There are generally two schools of thought when it comes to climate change: it is bad, or it doesn't exist. But Bjorn Lomborg wants that to change. He says it's important to recognize that there are some benefits to climate change, and to come up with more innovative ways to tackle the negatives. 

This article investigates the temperature reduction impact of major climate policy proposals implemented by 2030, using the standard MAGICC climate model. Even optimistically assuming that promised emission cuts are maintained throughout the century, the impacts are generally small. The impact of the US Clean Power Plan (USCPP) is a reduction in temperature rise by 0.013°C by 2100. The full US promise for the COP21 climate conference in Paris, its so-called Intended Nationally Determined Contribution (INDC) will reduce temperature rise by 0.031°C.