THE climate crisis is the world's greatest challenge, but the transition to a more sustainable future also represents the biggest investment opportunity of our lifetime, says Pictet Wealth Management's head of ESG Rosa Sangiorgio.

Yet, choosing the right investments - so that one not only makes the best use of the opportunities ahead, but also imparts a positive impact on the environment - can be tricky.

Recognising this, Pictet has come up with a framework to guide investors in choosing companies that are fully committed to a net-zero emissions future, which it calls "net-zero transition leaders".