All carbon allotropes are solids under normal conditions, with graphite being the most thermodynamically stable form.

They are chemically resistant and require high temperature to react even with oxygen.

He was considered to be the brutish ancestor link to man in the evolution chain, the intermediate stage between man and ape.

near Dusseldorf, Germany uncovered a skull and bones.

The physical properties of carbon vary widely with the allotropic form.Graphite is a good electrical conductor while diamond has a low electrical conductivity.Under normal conditions, diamond, carbon nanotubes, and graphene have the highest thermal conductivities of all known materials.The term is also used more generally to characterize any type of exponential or non-exponential decay.For example, the medical sciences refer to the biological half-life of drugs and other chemicals in the human body. The original term, half-life period, dating to Ernest Rutherford's discovery of the principle in 1907, was shortened to half-life in the early 1950s.