XPRIZE announced the launch of its next major competition: the $2 million Wendy Schmidt Ocean Health XPRIZE. On the heels of the successful Wendy Schmidt Oil Cleanup XCHALLENGE, the Wendy Schmidt Ocean Health XPRIZE aims to spur global innovators to develop accurate and affordable ocean pH sensors that will ultimately transform our understanding of ocean acidification, one of the gravest problems associated with the rise in atmospheric carbon dioxide (CO2). The oceans absorb about one quarter of the CO2 that humans release into the atmosphere, causing the chemistry of the water to change and the oceans to become more acidic. As a result of increased CO2 emissions, ocean acidity is now at unprecedented levels, which could have devastating global consequences.