World Population day is an annual event, observed on July 11 every year, which seeks to raise awareness of global population issues. The event was established by the Governing Council of the United Nations Development Programme in 1989. It was inspired by the public interest in Five Billion Day on July 11, 1987-approximately the date on which the world's population reached five billion people. World Population Day aims at increase people's awareness on various population issues such as the importance of family planning, gender equality, poverty, maternal health and human rights.

A population is the number of all the organisms of the same group or species, which live in a particular geographical area. The world's population is estimated by the United States Census Bureau to be 7.513 billion. In the future, the world's population is expected to peak, after which it will decline due to economic reasons, health concerns, land exhaustion and environmental hazards.

Human overpopulation occurs when the ecological footprint of a human population in a specific geographical location exceeds the carrying capacity of the place occupied by that group. Overpopulation can further be viewed, in a long term perspective, as existing when a population cannot be maintained given the rapid depletion of non-renewable resources or given the degradation of the capacity of the environment to give support to the population.

By educating students, we can save lives, strengthen families, fight poverty, preserve the environment, and help achieve a world population that can live in harmony with the planet.