Carbon future in black and white
<p>Making sense of recent energy trends can seem like a high-stakes Rorschach test. Some experts see the boom in renewable energy and the shift away from coal in many countries as evidence that the world
Jeff Tollefson
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Mexico's scientist in chief
After winning a Nobel prize for helping to protect the planet, Mario Molina is tackling a much more difficult problem
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Climate panel must adapt to survive
Review recommends better governance and transparency for the IPCC in the face of more public scrutiny.
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Jet reveals atmospheres secrets
Marathon flights test models with first pole-to-pole snapshot of trace gases.
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Food: The global farm
With its plentiful sun, water and land, Brazil is quickly surpassing other countries in food production and exports. But can it continue to make agricultural gains without destroying the Amazon? Jeff Tollefson reports from Brazil.
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Amazon drought raises research doubts
A once-in-a-century drought struck much of the Amazon rainforest in 2005, reducing rainfall by 60–75% in some areas — and giving scientists a window on to a future coloured by climate change. The drought
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An erosion of trust?
Many climate researchers worry that scepticism about global warming is on the rise. Jeff Tollefson investigates the basis for that concern and what scientists are doing about it.
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Intensive farming may ease climate change
To many people, modern agriculture, with its industrial-scale farms and reliance on petroleum-based fertilizers, may seem a necessary evil
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US prepares for climate burden
It hasn't always been easy to get the White House to lead on climate change, so for years the question of how to incorporate global warming into long-range planning and public infrastructure in the United States has fallen to cities, states and individual federal agencies.
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Greenhouse-gas numbers up in the air
To control emissions, countries must first account accurately for their carbon. That will take considerable effort, reports Jeff Tollefson.
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Hydrogen vehicles: Fuel of the future?
Hydrogen fuel-cell vehicles, largely forgotten as attention turned to biofuels and batteries, are staging a comeback. Jeff Tollefson investigates.