Yale Environment 360: Philanthropist Wendy Schmidt is offering $2 million in prize money to inventors who can develop inexpensive and easily deployable sensors to measure ocean acidification. The Wendy Schmidt Ocean Health X Prize is offering $1 million to the team that invents the most accurate sensors to measure the oceans acidity and $1 million to the team that devises the most affordable and easy-to-use sensors. Biologist Paul Bunje, a senior executive for oceans at the X-Prize Foundation, said that because current...