Planting the seed of biodiversity
![Planting the seed of biodiversity](http://www.swissinfo.ch/image/42240892/3x2/305/203/73ea8e1be498a630f707e566662d7012/xL/davos-botanischer-garten-alpinum-schatzalp.jpg)
They're not just beautiful. Botanical gardens also have an important role to play in nature, as this series of photos shows.
They're not just beautiful. Botanical gardens also have an important role to play in nature, as this series of photos shows.