U.S. 'clean coal' program fails to deliver on smog cuts
"Clean" coal has a dirty secret: it regularly fails to deliver on its environmental promises
Political leaders arrive in Poland in race to deliver on U.N. climate deal
The biggest issues at the talks are likely to include climate finance and how to monitor nations' emissions
Forecasting trouble: How South Sudan's weather service is failing farmers
Decimated by civil war, South Sudan's met office is barely running, with inadequate funding, outdated equipment and untrained staff, experts say
Here's why there will be few protests outside the UN climate talks
The Polish government has banned spontaneous assemblies outside the talks - just as they are needed most
Thousands march peacefully in Brussels against global warming
Some 65,000 people participated in the "Claim The Climate" demonstration
Germany seeks private funds for climate projects in Africa, elsewhere -newspaper
African population is expected to double to 2.5 billion people by 2050, which would trigger construction of 1,000 more coal-burning power plants
In Louisiana, an appetite for oysters shields retreating shores
In Louisiana, coastal cities have joined an oyster-shell recycling program aiming to help save the state's shrinking shoreline
Thousands of Belgians march against global warming
Belgian demonstrators called for "ambitious" climate policies to limit global warming to 1.5 degrees Celsius in line with the Paris Agreement goals
Climate talks begin in Polish coal city Katowice
The talks face deep political divisions at the most important U.N. meeting on global warming since the landmark 2015 Paris deal
California wildfire survivors face new challenge: rebuilding
Insurance losses for the recent California wildfires are estimated at $10-$15 billion