Jarem Frye is missing most of his left leg. When he was 14, Frye was diagnosed with bone cancer. The next year, doctors amputated his leg above the knee. One day while skiing (with one ski ...

The international joint research team analyzed a leg bone fossil from a ceratopsian known as Centrosaurus apertus that is believed to have inhabited the Earth from 77 million years to 75.5 million ...