The best pieces of tamahagane are sent to a swordsmith, who heats, hammers, and folds the steel repeatedly in order to further combine the iron and carbon, and to draw out any remaining ...

A related question is how much are companies really willing to spend to reduce their carbon footprint? Although that’s tough to answer, I have seen bits and pieces of data on how much carbon ...

A newer, faster method developed in the 1970s works by using a particle accelerator to count the atoms of carbon-14. Radiocarbon dating can be used on any object that used to be alive. That includes ...