Going green will „destroy our economy“ – at least according to some commentators in recent days. We are told that Britain is a world leader in reducing carbon emissions; we have done what we can, and any further fight against the climate crisis will damage a Brexit-ravaged UK plc. But Britain’s largest asset manager – which is well-informed about the economic consequences of rising sea levels, droughts, crop failures, floods and other extreme weather events – makes it clear in a report that costs will come down if we act to address the causes of these woes. and much higher if we don’t. Legal & General Investment Management (LGIM) manages £1.2 trillion in assets, mostly through funds that track stock indices. It charges a small percentage of clients„ assets each year to manage them. If the economy grows and markets grow, so do its fees, and shareholders and customers are happy, so it has a hand in the game. LGIM says the window to meet the goals agreed in the Paris climate accords is still open, and that achieving them is “cheaper and easier than ever before.” But that window is closing fast. You may recall that the accords aim to limit global temperature rises to 1.5°C. Failure to do so could cut global GDP by 10 trillion dollars, LGIM warns. Stock market returns will be devastated. There will be a new wave of inflation that will be as bad as the one we are just emerging from.