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Maria Josefa Verdugo ships into the bitter cold of far-northern waters to measure ice-core properties as part of a year-round climate project.

Maria Josefa Verdugo ships into the bitter cold of far-northern waters to measure ice-core properties as part of a year-round climate project.

US federal biologist Christin Khan embraces risk above the Atlantic Ocean to monitor a rare species.

US federal biologist Christin Khan embraces risk above the Atlantic Ocean to monitor a rare species.