Arlen A. Ancheta, PhD is Professor 4 at the Faculty of Arts and Letters and Professorial Lecturer at the UST Graduate School. Her academic expertise cuts across Asian Studies (undergraduate course), Oriental Religion and Culture (MA candidate), and Environmental Science (MS and PhD courses). Her researches include solid waste management, tidal stream management, coastal communities, street children, Asian environment and flood disaster management.  She was involved in a research with the U-Belt Consortium members on Estero de Paco funded by the Department of Science and Technology (DOST) and currently leads the project, Manila Bay Studies funded by the Commission on Higher Education (CHED).

She is currently the Vice President Internal of Mother Earth Foundation (MEF), an NGO advocating community-based solid waste management, Vice President of the Philippine Network for Environmental Educators (PNEE) and Treasurer of the Philippine Society for the Study of Nature (PSSN).