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Both national and global climate policy must redirect its focus from setting a price on carbon to promoting the rapid deployment of clean technologies.
Aircraft emissions show little sign of abating as the development of climate-friendly technologies struggles to keep pace with booming passenger numbers.
Both emissions reduction and adaptation will need to be much stronger than currently planned if dangerous global impacts of climate change are to be avoided. June's UN talks in Bonn and July's G8 summit present opportunities for world leaders to face this challenge.
Vast technological opportunities exist for providing the world with clean energy in the future, but the real debate is over the policies needed to decarbonize the growing global economy.
By 2050, there will be an estimated 9 billion humans on the planet. Kerri Smith asks whether curbing the world's burgeoning population could help in tackling climate change.
With warming expected to worsen public health problems, policymakers are being urged to fight disease and climate change simultaneously. Brian Hoyle reports.
