How do you deal with 9m tonnes of suffocating seaweed?
Across the Gulf of Mexico and the Caribbean, scientists are developing alternative sustainable solutions to the golden tide of Sargassum
December 2019
The Upside weekly report
The Upside's best things that happened in 2019
Here are our highlights – tell us yours and we’ll showcase them in next week’s Christmas newsletter
May 2017
Innovations in renewables
Negative emissions tech: can more trees, carbon capture or biochar solve our CO2 problem?
As CO2 levels rise, controversial techniques including carbon capture and storage, enhanced weathering and reforestation may be solutions
September 2014
Cool Planet: can biochar fertilize soil and help fight climate change?
Market information and long-term impacts remain unknown, but a biofuel byproduct can store carbon – and its market is growing despite higher costs
April 2014
Earth insight
Leaked IPCC climate plan to worsen global warming - ecologists
Nafeez Ahmed: Critics say bioenergy, carbon capture, among draft report's 'false solutions' to sustain business as usual economics
October 2010
Environment blog
Could barbecues help fight climate change?
Duncan Clark: Durwood Zaelke's emergency plan for tackling climate change ranges from the Montreal protocol to carbon-negative barbecues
September 2010
Guardian Environment Network
How biochar production could help climate change fight
Cornell University's Johannes Lehmann thinks biochar - using organic matter to bury carbon dioxide in the ground - could be a large scale way to tackle global warming
August 2010
UK government urged to evaluate biochar potential with trial schemes
First official report says burying charcoal in the soil has potential to cut greenhouse gases but scientific uncertainties remain
September 2009
Response
Biochar is a good tool for climate mitigation
Craig Sams
Response: We need to make sure we don't repeat the mistakes of biofuels. But the risks are avoidable, says Craig Sams
August 2009
Turning charcoal into Carbon Gold
A chocolate maker and music promoter aim to create a £1bn biochar industry, in a controversial effort to fight climate change
July 2009
Locking up carbon with biochar
Turning crop wastes and other biomass into charcoal and spreading it on tropical soils can sequester carbon and boost crop productivity
March 2009
Credit and criticism for biochar
George Monbiot's blog
Charleaders must cool enthusiasm for setting fire to the planet
This gift of nature is the best way to save us from climate catastrophe
Peter Read
We never said biochar is a miracle cure
Pushker Kharecha and Jim Hansen
James Lovelock on biochar: Let the Earth remove CO2 for us
James Lovelock
Cif green
Biochar: Much is unknown but this is no reason to rule it out
Chris Goodall
George Monbiot's blog
Woodchips with everything. It's the Atkins plan of the low-carbon world
George Monbiot
'Biochar' goes industrial with giant microwaves to lock carbon in charcoal
