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Given the amount of crises facing us at the moment with the horrors war and threat of war from Russia and China, climate change, political dysfunction, even the news that polio is back, we thought it was about time we speak with someone who has a very positive outlook in these circumstances. Cognitive Psychologist Professor Steven Pinker, author of ‘Rationality: What It Is, Why It Seems Scarce, Why It Matters’, writes optimistically about the world, human beings and our capacity for improvement progress. Professor Pinker spoke to Today's Justin Webb about why we should ignore the newspaper headlines and look at the opportunities that can be found in the chaos of today's world.

(Image: Steven Pinker, Credit: Jeff Overs 91Èȱ¬)