Measles long-term impact, tsunami fungus and bendy materials

Science correspondent Siouxsie Wiles joins Kathryn to talk about the new findings into how measles can weaken the immune system for years after an infection, the fungus that migrated from the tropics to the forests of the Pacific Northwest thanks to tsunami and researchers have developed a material that can bend and move to face light beams - much like sunflowers move to face the sun.