Dan Collyns

Five thousand metres above the most biodiverse corner of the Amazon, tropical ecologist Greg Asner and his team see a kaleidoscope of colours among a mass of green.

John Vidal

Ecological 'kings of the jungle' being toppled by forest fragmentation, severe drought and new pests and diseases

Gopal Sharma

BARAHBISE, Nepal, Looking at the swirling grey waters of the Bhote Koshi River, Ratna Kaji remembers when it turned into a "monster," leaving behind a trail of death and destruction.

MORT ROSENBLUM and MAR CABRA

TALCAHUANO, Chile — Eric Pineda, a dock agent in this old port south of Santiago, peered deep into the Achernar’s hold at a measly 10 tons of jack mackerel — the catch after four days in waters once so rich they filled the 17-meter fishing boat in a few hours.

John Vidal

By 2050 there will be another 2.5 billion people on the planet. How to feed them? Science's answer: a diet of algae, insects and meat grown in a lab

United Nations

The report of the United Nations Secretary-General's High-Level Panel on Global Sustainability.

Ken Ellingwood

If you read this story by Ken Ellingwood about the deluge of trash on a Mexican beach, you may be wondering: Just where does all the junk that goes into the ocean end up?

David Fogarty

SINGAPORE, Jan 30 (Reuters) - Extreme heat can cause wheat crops to age faster and reduce yields, a U.S.-led study shows, underscoring the challenge of feeding a rapidly growing population as the world warms.

MANILA, 31 January 2012 (IRIN) - The Philippine government has made geo-hazard maps, which outline areas prone to natural disasters, publicly available in a bid to reduce vulnerability at community level.

Produced by Mairi Mackay, CNN and George Webster, for CNN, Built by Matt Barringer, CNN

The past century has been defined by an epic migration of people from rural areas to the city. In 2008, for the first time in history, more of the Earth's population was living in cities than in the countryside. The U.N.