People Fixing the World Folgen

Giving children lessons in how to think and learn for themselves can lead to dramatic improvements in results, according to education researchers. World Hacks meets children learning these “meta-cognition” techniques through philosophy lessons and juggling and looks at the difficulties in implementing the system.Presented by Sahar Zand. Image caption: Child with hand up in class / Image credit: AP

Nearly 1,000 people were shot and killed by the US police in 2015, sparking protests and huge controversy. But a new solution promises to reduce the death toll, by focusing in on the key moment of stress in which guns are discharged. Studies have looked at police officers' reactions in these situations - including their stress levels and their implicit biases.Now, a new training system has been developed which uses heart rate monitors and breathing exercises to minimise the stress reaction. World Hacks investigates whether the system works, and whether it will help save lives. Presented by Sahar Zand.(Photo: Police stand guard near Trump Tower on Election Day. Credit: Spencer Platt/Getty Images)

What can you do if you don’t have access to running water? No pipes, no wells, no rainfall? The solution may be to catch water from fog. We meet Abel Cruz, the Peruvian man behind a huge fog net project which is providing water to a community in the slums of Lima. Could fog catching be a solution to wider water crises facing the world?Produced by Tom Colls. Image caption: Fog nets in Peru / Image credit: BBC