Melissa Etheridge faces cancer, with the help of songwriting. Busi Mholong, one of the leading singers of urban Zulu music, only found success after overcoming substance abuse. José Carreras and Debbie Harry united to sing for health issues, despite their different musical styles. Schools in Singapore use the internet so students can have video conferences with scientists around the world. New treatments are tested to fight breast cancer. A stem cell treatment helped a woman regain her sight after an acid attack. A new scanner builds a 3-D image. Repairing an opera singer’s vocal chords can be a delicate operation. Members of Metallica let cameras in to watch their therapy sessions as they worked to overcome substance abuse and other issues. Cancer patients have their pain mitigated by music. And in Thailand, music therapy helps young men and women in prison overcome their drug addictions.