Complex sentence: According to skeptical investigator Joe Nickell, supposed alien implants appear to be ordinary materials such as a shard of glass, jagged piece of metal, and a carbon fiber, often found lodged in extremities such as toes, hands and shins.
Split into simpler sentences: According to skeptical investigator Joe Nickell, supposed alien implants appear to be ordinary materials such as a shard of glass, a jagged piece of metal, and a carbon fiber. The objects are often found lodged in extremities such as toes, hands and shins.