JOANNA M. FOSTER

With the world’s freshwater supplies under mounting pressure from pollution and galloping consumption, understanding the how, where and why of water use is more important than ever.

Frederika Whitehead

UNDP reports says violent crime, police corruption and failings in justice system are having a detrimental effect on business and investment, and could be blocking development

Fox Van Allen

It should come as no surprise to learn that the world is over reliant on petroleum, from the gas we put in cars to the plastic bags we take groceries home in.

Nathan Willcox

Interactive Online Map Shows County-by-County Weather-Related Disaster History

It is now two months since the devastating floods that hit the southern Philippines, killing more than 1,000 people and leaving many more homeless.

Jonathan Watts

Global Partnership for Oceans, comprising governments, NGOs, scientists and businesses, is a boost for overfished, polluted and warming oceans

Christine Hsu

Model and advocate Gisele Bündchen was in Nairobi, Kenya on Friday drawing attention to a lack of electricity for much of the world’s population and advocated for a United Nations effort to get more investment to resolve the problem.

David Lindsay

Dar es Salaam, Tanzania (CNN) -- An estimated 3 billion people -- nearly half the world's population -- still use an open fire as their primary source of energy for cooking and heating.

But there's a problem: the smoke.

Ann Goodman

How might urban climate change affect business? What can business -- and cities -- do about it? And how might each help the other prepare for a potential threat to what's clearly a mutually beneficial relationship?

BAN KI-MOON

As a child growing up during the Korean War, I studied by candlelight. Electric conveniences such as refrigerators and fans were largely unknown. Yet within my lifetime, that reality changed utterly. Easy access to energy opened abundant new possibilities for my family and my nation.