A UN-backed study published on Wednesday has found that Climate change is making pests which ravage important agricultural crops even more destructive, heightening threats to global food security and the environment.

The scientific review looks at 15 plant pests that have spread or may spread due to climate change. Risks are increasing, the authors warn, with a single, unusually warm winter capable of providing conditions suitable for insect infestations. 

Veronica Njie reports.