Hundreds of pilgrims died in a stampede in Mecca on Thursday, during the annual Hajj pilgrimage. It's not the first tragedy on the Hajj. How do people prepare for the risks, and what lessons can be learned for the future?
Afghan teen rapper Sonita Alizadeh used to be a child laborer when she lived in Iran as a refugee. Now she's a junior at Wasatch Academy in Utah, and reflects on the difference between work and homework.
When Pope Francis addressed the US Congress, he urged lawmakers to make a "courageous and responsible effort to avert the most serious effects of the environmental deterioration caused by human activity." Yet many lawmakers deny the existence of climate change or reject the idea that human activity contributes to it.