Science Health & Safety Optimism: Is It A Personality Trait, Or Could People Possibly Learn It? 4:24pm May 20, 2020 by Alix Spiegel Science Health Mental Health Share URL copied to clipboard! Copyright 2020 NPR. To see more, visit https://www.npr.org. 300x250 Ad More All Things Considered Arts Prosecution and defense present closing arguments in trial of Sean Combs by Scott Detrow National What this term says about where the Supreme Court is headed by Scott Detrow 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate