Population explosion, malnutrition and ill health are the problems that modern scientists examine for solutions. The agriculture scientists are required to concentrate not only on large production, but also more on improved varieties and protein-rich foods to ward off the ills of malnutrition. The medical scientists responsibilities is not limited to the manufacture of drugs to cure diseases, they must invent medicines to rpot zumanity from epidemics. UoJess important is the area of war and weapons.<br /> The large scale devastation in Japan by the atom bomb is a stigma on the lair name of scientist. The modem scientist must make a point not to help in the proliferation of atomic weapons. They should rather devote their energies to the peaceful uses of atomic energy for the emancipation of humanity from hunger and diseases. They must realise that the benefit of their researches and inventions should reach the hands of all, the rich and poor alike. <br /> What does the expression &#39;malnutrition&#39; used in the passage mean?