The United States and other countries hiked their targets for slashing greenhouse gas emissions at a global leaders’ climate summit hosted by President Joe Biden, an event meant to resurrect US leadership in the fight against global warming. Biden unveiled the goal to cut emissions by 50%-52% from 2005 levels at the start of a two-day climate summit kicked off on Earth Day and attended virtually by leaders of 40 countries. The new US target nearly doubles former President Barack Obama’s pledge of an emissions cut of 26%-28% below 2005 levels by 2025. Canada’s Prime Minster Justin Trudeau, announced that Canada’s goal will be to cut 40%-45% by 2030 below 2005 levels, up from 30%. Other countries include the UK 78% (by 2035), Japan 46%, and the EU 40%. The US confirmed it will be pushing for the International Maritime Organization to ensure shipping is a zero emissions industry by 2050.