Resolve to Solve with Miles O'Brien

It's a wispy red seaweed that can cut cattle methane by 50, 80, even 98 percent. Miles O'Brien travels from Marin County, California, dairy to seaweed farms in Mexico, a UC Davis research barn and an Australian burger joint to trace how one entrepreneur's gut instinct and a handful of scientists are racing to scale a climate fix that fits in a cow's lunch.

There were once 400 million beavers in North America until trapping nearly wiped them out. Miles O'Brien travels from a Wyoming ranch to a Minnesota lab tracing the rebound of these industrious rodents. Rancher Tom Chant is a "beaver believer" after seeing his dry and dusty creek turn lush once beaver dams moved in, proving nature's original engineers may be the West's best hope against drought.