Marshmallow concrete improves chances of surviving crash landing
A new material looks like regular concrete but crumbles like a marshmallow when a plane lands on it in an emergency. Known as marshmallow concrete, this ultra-light foam absorbs an aircraft's energy and helps bring it to a safe stop during runway overruns.Researchers at the China Building Materials Academy (CBMA) and their partners designed the material to weigh just 12.5 pounds per cubic foot. That's about one-tenth the weight of […]