TechnologyTemporary scalp tattoo can be used to record brain activity EEG recordings used in neurology could be made simpler by replacing the usual electrodes, wires and gels with a tattoo printed onto the scalp News
HumansCocaine in mummified brains reveals when Europeans first used the drug The use of cocaine only took off in Europe during the 19th century, after the drug was chemically isolated from coca leaves, but new evidence suggests much earlier use News