"The planet is heating at an alarming rate. We need to raise the albedo, reflect the Sun’s heat,draw CO2 out of the atmosphere and reduce acidity in the oceans.  It’s a tall order.  Peter Wadhams and Ye Tao argue the case for different methods of geoengineering, and for restoring the acid/base balance in the oceans. Peter advocates both #MarineCloudBrightening and Direct Air Capture, while Ye’s #MEER reflection project works with mirrors, particularly on farms, where increased shade would save water and cool crops in the escalating heat and droughts to come.Both Peter and Ye recommend farming #oysters and using their shells to recover the acid/base balance of the ocean, while host, Dale Walkonen, recommends ending industrial animal agriculture. These solutions would be very powerful in restoring Earth’s natural systems, both on land and in the sea."