Pien Metaal is a researcher with TNI. She holds a Master of Arts Degree in Political Science and International Relations from University of Amsterdam. She has been a member of the Transnational Institute's Drugs and Democracy team since 2002, though her participation with the Programme dates further back.
She lived in Latin America for several years, spending most of that time in the Andean region. During those years, she dedicated most of her time and energy to research, development and implementation of drug policy, particularly in relation to coca and cocaine, and worked with local and international experts and NGOs. She has written numerous articles, and contributed to various books and publications on the drug policy in Latin America since 1996.