This photo shows conjoined twins born in Syria on July 23, waiting for lifesaving surgery. Arrangements weren't made in time and the twins died on Wednesday. Courtesty of Syrian American Medical Society hide caption

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A Syrian Red Crescent team works to evacuate the conjoined twins to a hospital in Damascus on Friday. Courtesy of the Syrian American Medical Society hide caption

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Omar looks through Kai's photo book. The charges for the infant's six months of care in the neonatal intensive care unit totaled about $11 million, according to the family, though their insurer very likely negotiated a lower rate. Heidi de Marco/KHN hide caption

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An Ill Newborn, A Loving Family And A Litany Of Wrenching Choices

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Mmm. Smells just like your identical twin. iStockphoto hide caption

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Why Do Mosquitoes Like To Bite You Best? It's In Your Genes

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Mike (left) and Matt (right) Gragnani are 25-year-old identical twins. Together, they've been able to buy an apartment and start a business before many of their peers. Courtesy of Mike Gragnani hide caption

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Millennials Might Be 'Generation Twin.' Is That A Bad Thing?

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How Can Identical Twins Turn Out So Different?

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