Britain faces fines for failing to reduce "excessive" levels of nitrogen dioxide fumes from traffic.
Group monitoring how investment funds manage climate risks says many expose investors to huge losses.
The sensitivity of the Earth system to a doubling of CO2 may be twice as great as scientists had thought.
Newly found greenhouse gas is an unregulated chemical that breaks records for climate impacts.
The UN's climate chief says it would be too 'politically difficult' to negotiate carbon emissions based on the IPCC's findings.
Sandy's storm surge is a warning that rising seas could devastate coastal nuclear power plants.
Countries downplay hazards of pollution despite evidence that it leads to 430,000 shortened lives a year.
Typhoon Wipha may make landfall near Tokyo Tuesday, with high winds and surf affecting the Fukushima nuclear plant.