In biomechanical tests, it performed as well as a human femur. Researchers estimated each 3D-printed femur cost $7 to make. Li said 3D-printed bones have a range of potential applications.

An ancient femur bone offers insight into how humans feel better when we care for others, says Remy Blumenfeld. There are things you can do, even if you can't leave your home.

The femur bone is over six feet long and is thought to have belonged to a sauropod – a subgroup of herbivorous, long-necked and four-legged dinosaurs common in the Jurassic era.

The bone replica is made of polylactic acid, a bio-based, low-cost biodegradable polymer commonly used in 3D printing. The design, which represents the midsection of the femur, is almost 8 inches ...

The femur bone is over six feet long and is thought to have belonged to a sauropod – a subgroup of herbivorous, long-necked and four-legged dinosaurs common in the Jurassic era.