These e-tattoos work through liquid ink printed on the scalp. In a new study, they were shown to be as accurate as conventional electroencephalography (EEG) methods, while being much easier to ...

Researchers from the University of Southern Denmark, analyzing data from Danish twin pairs, have found evidence suggesting ...

If tattoo ink did cause cancer, you’d expect people who had more of their body tattooed to be at greater risk. Crucially, the authors did not find this. Even if the data were more convincing ...