ISLAMABAD, July 11, 2016 (Xinhua) -- Girls hold a child at a slum on World Population Day in Islamabad, capital of Pakistan on July 11, 2016. World Population day is an annual event, observed on July 11 every year, which seeks to raise awareness of global population issues. This year's theme is "Investing in teenage girls." (Xinhua/Saadia Seher)
