(Bloomberg) -- The gold rush for greener debt may be over.Most Read from BloombergI’ve Seen Trump’s Tax Returns and Now You Can, TooDonald Trump’s Taxes Reveal Big Losses: What We Learned So Far, in ChartsMusk Lashes Out at Unhappy Investor as Tesla Shares RetreatMusk Will Resign as Twitter CEO and Focus on EngineeringChina's Covid Tsunami Could Spark a Dangerous New Variant That Infects the WorldGlobal sales of ethical debt are set to suffer their first drop this year, as volatility and higher