![Two scientists sampling shell and charcoal at Māori midden.](http://static.sciencelearn.org.nz/images/images/000/005/091/full/FIPET_ART_01_RadiocarbonCalibrationCurves_FionaSamplingshells.jpeg?1674177380)
Dr Fiona Petchey (left) and C-14 pretreatment technician Katy Anderson on location at a Māori midden. Fiona is sampling shell and charcoal for radiocarbon dating.
Dr Fiona Petchey (left) and C-14 pretreatment technician Katy Anderson on location at a Māori midden. Fiona is sampling shell and charcoal for radiocarbon dating.