Nepal Academy of Science and Technology (NAST), previously RONAST, is an autonomous apex body established in 1982 to promote science and technology in Nepal. With the implementation of federal structure by the government of Nepal, it has opened its first provincial office at Mahendranagar.

It has the following objectives:

The Molecular Biotechnology Unit (previously called the Biotechnology Unit) started research at DNA level in 2002 with molecular diagnosis of Citrus Huanglongbing (HLB) disease; commonly known as Citrus Greening Disease. Prior to this, it was engaged in research activities such as the production of disease-free planting materials of citrus through shoot tip grafting in vitro tissue culture technique, Bacillus thuringiensis based biological pesticide, Citrus Tristeza Virus diagnosis using ELISA technique and plant propagation using plant growth regulators.

Activities of the unit are:

The Environment and climate study research unit conducts research on environmental issues. Besides research, water quality analysis service is provided to consumers. The major programs of the unit are:

The objective is to investigate methods of pollution control, conduct climatological and meteorological studies and provide an analytical service for the quality analysis of water.

Program and achievements;

The Physical Science Unit consists of the following fields of research: