Proven technologies for a net-zero energy system already largely exist today, according to a report published Tuesday by the International Renewable Energy Agency (IRENA). The report predicts that renewable power, green hydrogen and modern bioenergy will shape the way we power the world in 2050. Adopting such solutions would set world leaders on track to meet their target of keeping the planet from heating by more than 1.5 degree Celsius above preindustrial levels this century, according to the World Energy Transitions Outlook report. The UN had warned in November that pledges to meet this goal were so far “woefully inadequate.”...