It's monsoon season in Bangladesh, which means Iqbal's mother must cook the family's meals indoors, over an open fire.The smoke from the fire makes breathing difficult for his mother and baby sister.Hearing them coughing at night worries Iqbal. So when he learns that his school's upcoming science fair has the theme of sustainability, Iqbal comes up with the perfect idea for his entry: he'll design a stove that doesn't produce smoke!Has Iqbal found a way to win first prize in the science fair while providing cleaner air and better health for his family at the same time?