Andrew C. Revkin

Just in case you needed more reasons to be concerned about the stability of the Middle East, new research using data from NASA’s gravity-sensing Grace satellites shows a substantia

Peter Aldhous

Call it the new normal. Last year was the ninth warmest on record across the globe, according to NASA's annual analysis of surface temperatures. But by recent standards, it was nothing special: all but one of the hottest 10 years have happened since 2000.

Bettina Wassener

HONG KONG — Air pollution has worsened markedly in Asian cities in recent years and presents a growing threat to human health, according to experts at a conference that began on Wednesday.

Peter Murray

Short on arable land? One solution would be to plant…up. Singapore, a small country that imports most of its food, has now begun selling vegetables from its first vertical farm. And even while they’re more expensive the vegetables are already selling faster than they can be grown.

John Parnell

Ban Ki-moon has warned the world is on course to run out of freshwater unless greater efforts are made to improve water security.

Nafeez Mosaddeq Ahmed

Just over two years since Egypt's dictator President Hosni Mubarak resigned , little has changed. Cairo's infamous Tahrir Square has remained a continual site of clashes between demonstrators and security forces, despite a newly elected president.

Sri Mulyani Indrawati

In April the World Bank governors endorsed two historic goals: to end extreme poverty by 2030 and to ensure that prosperity is shared.

John Podesta, Casey Dunning

"Ending extreme poverty in all its forms" is no longer a platitude or a dream for development experts – it's the guiding vision of the United Nations High Level Panel, as well as an achievement that's closer to being realized than ever before, thanks to the millennium development goals.

John Vidal

Just 9% of the millions of tonnes of fish caught by China's giant fishing fleet in African and other international waters is officially reported to the UN, say researchers using a new way to estimate the size and value of catches.

Janet Larsen

In recent years weather events have whiplashed between the extremes of heat and cold, flooding and drought.