A Harvard Business School expert says effects will strengthen as manufacturers everywhere feel the pinch of slowing one of the world’s largest economies.

Physician burnout is costing the U.S. health care system an estimated $4.6 billion annually, according to new research from an international team led by a Harvard Business School researcher.

Documentary Night in Klarman Hall kicked off with a panel discussion on a clip from “Bending the Arc,” a film about Partners In Health, the NGO founded in 1987 by Harvard Medical School students Paul Farmer and Jim Yong Kim and social justice and health-care advocate Ophelia Dahl.

A half-day conference at Harvard Business School examined the growing promise of research on aging and the potential of now-experimental interventions to one day ease the burdens of infirmity.