Stories by Debra Kahn

Drought and saltier aquifers pose threats to the biggest farming state in the U.S.

The techniques for collecting snow depth data may be amusing but the data collected determine how much water there will be

Historic cap-and-trade program expands to cover gasoline and diesel but slumping prices hide the impact

A new fueling station in the Golden State hopes to serve more fuel cell cars

Even more extremes expected in future according to the new National Climate Assessment

Organic dairy farmers can't find fodder to feed the cows and make the milk, thanks to an intense drought

Powerful tides provide a present-day glimpse of what future tides may look like

Among the first of its kind, the regulations will force developers to assess flooding risks and to seek state approval on projects

The state may need a year to iron out a carbon-credit trading system that can't be manipulated

The federal licenses for the Diablo Canyon plant, near San Luis Obispo, are valid for at least another decade, but opponents were citing seismic and tsunami-related concerns even before last week's magnitude 9.0 quake off the coast of northern Japan

Regional leaders signed a memorandum of understanding in a bid to assert regional authority on climate change policy

The California Air Resources Board issued a preliminary design last week for the country's first comprehensive, mandatory emissions trading system for greenhouse gases

The WaterBoxx needs just 3 inches of rainfall per year to deliver a slow and steady supply of water to plants or trees

Providing feedback on energy use can actually backfire with some Republicans, causing them to increase consumption

Industry manufacturers appear to favor the technology combination

Fuel economy label would appear on best brands

Regulators adopt first in nation standards to cut greenhouse gas emissions from transportation fuels

States rush to meet March 23 deadline for federal energy funds