Biologist Paul Ehrlich, author of 1968’s ‘Population Bomb,’ which predicted a dire global future, died on Monday.

His best-selling 1968 book, which forecast global famines, made him a leader of the environmental movement. But he faced criticism when his predictions proved premature.

Last month, UN DESA launched the World Youth Report on Youth Mental Health and Well-being, highlighting the urgent need for inclusive, youth-informed mental health policies. Another report, World ...

Closer home, India’s population will continue to grow briefly from its current 1.5 billion to 1.7 billion, and then drop back to 1.5 billion by 2100—leaving the population unchanged after a 75-year ...