PRAGUE – We are all brought up to recycle paper to save trees. We get countless e-mail admonitions: “Please consider the environment before …

PRAGUE – For decades, the idea of the electric car has captured the imaginations of innovators – including Henry Ford and Thomas Edison more…

NEW YORK – On the evening of March 23, 1.3 billion people will go without light at 8:30, and at 9:30, and at 10:30, and for the rest of the …

SÃO PAULO – Finally, after 12 years of delay caused by opponents of genetically modified (GM) foods, so-called “golden rice” with vitamin A …

PRAGUE – Scare stories have been an integral part of the global warming narrative for a long time. Back in 1997, Al Gore told us that global…

PRAGUE – The Doha meeting continued 20 years of failed climate negotiations, since the original Earth Summit in Rio in 1992. There, countrie…

COPENHAGEN – When “superstorm” Sandy hit the east coast of the United States on October 29, it not only flooded the New York City Subway and…

PRAGUE – Campaigners on important but complex issues, annoyed by the length of time required for public deliberations, often react by exagge…

PRAGUE – Weather conditions around the world this summer have provided ample fodder for the global warming debate. Droughts and heat waves a…

MALMÖ – “Everyone knows” that you should drink eight glasses of water a day. After all, this is the advice of a multitude of health writers,…

SANTIAGO – One of the recurrent themes at the United Nations’ spectacularly unsuccessful Rio+20 summit in June was the need to change how we…

COPENHAGEN – Tens of thousands of people will soon gather in Rio de Janeiro for the United Nations Earth Summit. The participants, ranging f…

COPENHAGEN – If you had $75 billion to spend over the next four years and your goal was to advance human welfare, especially in the developi…

COPENHAGEN – This decade has seen remarkable progress against humanity’s greatest challenges. Consider the declaration of victory over polio…

COPENHAGEN – Efforts to stem global warming have nurtured a strong urge worldwide to deploy renewable energy. As a result, the use of wind t…

COPENHAGEN – One of the world’s biggest green-energy public-policy experiments is coming to a bitter end in Germany, with important lessons …

COPENHAGEN – Dressing up failure as victory has been integral to climate-change negotiations since they started 20 years ago. The latest rou…

COPENHAGEN – Extreme weather is often said to be one of the main reasons for taking firm action on global warming. Nowadays, no hurricane or…

COPENHAGEN – When Denmark’s new government ministers presented themselves to Queen Margrethe II last month, the incoming development ministe…

NEW YORK – It is dangerous to believe that the end of AIDS is in sight. Around 30 million people around the world live with HIV, and another…

COPENHAGEN – Thirty years ago, the world got its first inkling of impending catastrophe when five young gay men in Los Angeles were struck d…

COPENHAGEN – Amid a growing wave of concern about climate change, many countries – including Brazil, Australia, the United States, and the m…

NEW YORK – In May, the United Nations’ International Panel on Climate Change made media waves with a new report on renewable energy. As in t…

COPENHAGEN – At this century’s start, leaders from every country agreed to pursue the United Nations’ Millennium Development Goals. The ambi…

COPENHAGEN – Turmoil across the Middle East and Northern Africa has refocused attention on the impact that political tensions or interferenc…