Scientist planning a new 'Noah's Ark'

As a summer heat wave rippled through many regions across the globe, raising temperatures in several areas to record heights and causing Arctic sea ice to melt, the threat from the climate change crisis loomed larger than ever.

With sea levels continuing to rise and increasingly frequent droughts, what is the future for humanity?

For Xu Jianchu, a scientist with the World Agroforestry Center in Nairobi, Kenya, and also a professor at the Chinese Academy of Sciences' Kunming Institute of Botany, the Earth's mountainous regions may hold an answer based on various aspects of nature and biodiversity.