To stop and perhaps one day reverse climate change requires changes big and small. Despite the thousands of power plants burning coal and other fossil fuels today, nearly 3 billion people still depend on solid fuels, such as wood, dung, and crop residues, for their daily energy needs.

In an effort to revamp the time-intensive process of conducting household surveys to collect health data in developing countries, a new project is using mobile phones and rapid processing techniques to generate regular updates for a tranche of indicators previously only adjusted every three to five years.

Despite some critics, the recent U.S.-China agreement over carbon emissions has sparked remarkable optimism in global climate negotiations. It’s also opened the door to new bilateral engagement between the U.S. and Chinese environmental communities on other issues, including China’s massive air pollution problems (16 of the world’s 20 most polluted cities are in China).

“A world in which a quarter of humanity is denied full enjoyment of their rights is an unjust world,” said Kate Gilmore, deputy executive director of the United Nations Population Fund (UNFPA). “It’s a world without the building blocks for human progress, for human peace, for human security.” [Video Below]

A quick scan through the charts and graphs of Pakistan’s most recent Demographic and Health Survey yields more than a few insights into the performance of the government’s health policies and the public health and demographic challenges it will face in the future.

Global population growth is so rapid that even the most severe crises imaginable would still leave the planet with more people than it can sustainably support, according to a recent study by the University of Adelaide’s Corey Bradshaw and Barry Brook published in the Proceedings of the National Academy of Sciences.