More eyes and employees are involved in the process of transporting four-legged passengers.

CNN: STORY HIGHLIGHTS

These can include transporting the remains, embalming the body and the casket or cremation process.

FORBES: What It Costs To Die

Some people have looked at the idea of grinding up peridotite and using it to soak up emissions from power stations, but the process turns out to be expensive, partly because of the costs of transporting all the rock.

ECONOMIST: Greenhouse gases

Both genes help in building and transporting proteins and making sure they're in the right place in cell structure -- a process called RNA processing.

CNN: Gene linked to some cases of Lou Gehrig's disease found