At 18, Katie Stubblefield lost her face. At 21, she became the youngest person in the U.S. to undergo the still experimental surgery. Follow her incredible story.
The calcium atoms that make up your bones are much larger, so they are better at absorbing X-ray photons. In the next section, we'll see how X-ray machines put this effect to work. Other X-Ray Uses The most important contributions of X-ray technology have been in the world of ...
Whether or not they have wings, some insects might get the chance to fly if selected to go in space and become part of the space-farming research. Though many plant parts are inedible for humans, they make a delicious meal for insects. Insects can convert much of this inedible material in...
Nigersaurus, you might remember, we named for bones collected on the last expedition here three years ago. This sauropod (long-necked dinosaur) has an unusual skull containing as many as 500 slender teeth. How long does an Ankylosaurus live? Ankylosaurus, (genus Ankylosaurus), armoured ornithisch...
Return the spaceship to Earth safely -- no broken bones on the astronaut, no severe damage to the ship, etc. Repeat the flight within two weeks using the same ship, having replaced no more than 10 percent of the ship's parts (with the exception of fuel), thus classifying the spacecraft...
The carnage had fortunately avoided two major areas of risk with maxillofacial injury—the "triangle of death", an encephalitis-prone isosceles area surrounding the middle bridge of the nose and edges of the mouth, and the bones of the orbital wall, which, at only millimeters thick in certain...
Avoid small ships and complex ships for your first building experience. There are many operational systems in our warships and every system is equally important in its own right. Think about it, which is more important, cannon, drive motors, pump, steering, or balance? After a little reflectio...
Without Newtonian physics we couldn’t have achieved space flight, let alone landed on the moon. But we could never have gotten to the moon with Newton alone. We needed thermodynamics and quantum mechanics and orbital mechanics and so the contributions of many different branches of physics were ...
In the natural world, many of the structural materials (wood, shells, bones, etc.) arehybrid materialsmade up of simple constituents that are assembled at ambient temperatures and often have remarkable properties. Even though the constituent materials generally have poor intrinsic properties, the supe...
up over a single armature/skeleton), other times (like now), when the design makes it a better idea, I’ll create separate items and put them together at some future point (which is usually multiple armatures/skeletons/cores/bones/etc that will be put together to create the final figure)...