Australia's Murray Darling basin covers more than a million square kilometers, 14 percent of the country's landmass. It's the site of tens of thousands of wetlands, but increasing demand for water has stretched its resources to the limit.
Widely accepted numbers on how much of the world's population lives in cities are incorrect, with major implications for development aid and the provision of public services for billions of people, researchers say.
Drivers in Asia's urban centres are exposed to up to nine times more air pollution than their counterparts in Europe or the United States, a new study has found.
More than a billion people are at risk from a lack of air conditioning and refrigeration to keep them cool and to preserve food and medicines as global warming brings more high temperatures, a study showed on Monday.
Shifting wealth within populations - reducing the number of very wealthy and the number in poverty - can have as much carbon impact as reducing overall population.
From girls' education to aging and diversity, learn about some of the most important issues related to the global population in celebration in World Population Day.
As global temperatures rise due to climate change, the number of air conditioning units in use globally is expected to quadruple by mid-century, increasing from 3.6 billion today to 14 billion in 2050.
Overall, effective contraception benefits the environment, but each type of contraceptive has a different environmental impact. How green is your method?
Supreme Court of Pakistan has expressed a serious concern over the high population growth in the country and has asked the government to form a uniform policy to defuse the population bomb.
According to research by UCLA environmental economist Alan Barreca, hot weather reduces chances of getting pregnant — and the problem is expected to get worse because of global warming.
From the northern Himalayas to the sandy, palm-fringed beaches in the south, 600 million people - nearly half India's population - face acute water shortage, with close to 200,000 dying each year from polluted water.
With a population of 10 million, the world's second-largest desert city receives a paltry 0.3 inches of rain each year. Lima, Peru, is at high risk for water shortages.
Through the long summer months in India's capital, tens of thousands of people have cut back on daily showers and laundry because of a shortage of water that has led to fighting in some areas in which three people have been killed.
A leading Japanese politician has criticised people who do not have children as being “selfish”, the latest in a string of controversial parenting remarks by senior figures from the ruling party.
The number of people worldwide suffering from chronic hunger is more than 800 million. Will a growing population make it easier or harder to reduce this suffering?
City leaders agree they need to prepare for what many consider an inevitable cocktail of more extreme periods of dryness mixed with growth in population and water usage.
