This paper explains how the COP21 climate talks in Paris in December can help Africa deal with the threat of climate change. According to the authors, adapting to climate change while minimizing emissions can help drive the economic transformation that Africa needs, boosting growth and creating jobs. But, to take advantage of this opportunity, Africa needs investment. The authors spell out how the Africa Development Bank it is investing its own resources and mobilizing new sources of finance. They also show why wider international cooperation is crucial and needs to be ambitious, efficient and properly financed.