FT economics commentator Martin Sandbu looks at what is needed to achieve a just transition to a low-carbon economy that safeguards public health and sustainable energy sources ► Subscribe to FT.com here: bit.ly/2GakujT ► Listen to our podcasts: www.ft.com/podcasts Follow us on Twitter: twitter.com/financialtimes Check us out on Facebook: www.facebook.com/financialtimes