PORTLAND -- New research suggests sea lions are eating more salmon in the Columbia River than previously thought.
Data from tracking salmon over the past five years show a significant drop in survival below Bonneville Dam. Michelle Rub, a researcher with with the Northwest Fisheries Science Center, says preliminary numbers show survival dropping from 90 percent in 2010 to 55 percent in 2014.
In a darkened lab in the north of England, a research associate is intensely focused on the microscope in front of her. She carefully maneuvers a long glass tube that she uses to manipulate early human embryos.
"It's like microsurgery," says Laura Irving of Newcastle University.
Irving is part of a team of scientists trying to replace defective DNA with healthy DNA. They hope this procedure could one day help women who are carrying genetic disorders have healthy children.