Stories by Julia Pyper

Fuel cell vehicles produce zero tailpipe emissions, but the entire hydrogen production stream needs to be low-carbon

One source of hydrogen for hydrogen cars will be wastewater, at least in California

Will the most common molecule in the universe make for pollution-free cars?

The new concrete would contribute less to global warming and be stronger

By making it easier to walk, cycle or take the bus, the world cut pollution by 40 percent

A new report shows how autonomous and connected car technologies could begin to reduce the amount of pollution put out by vehicles

An Arizona company is the first to use 3-D printing to make a car

The move aims to boost the carmaker's hopes of producing an affordable electric vehicle

Smart cars that can save drivers' lives as well as fuel

Local stressors have have caused more than 50 percent of the decline in Caribbean coral cover since the 1970s

Eastern states in the U.S. are employing microgrids to improve resilience after big weather

A new report calls on the U.S. to lead on global fuel economy standards

A growing number of walkable urban areas suggests that the era of sprawling suburbs may be ending

The Berlin Air Show witnessed a silent, clean test flight by Airbus's E-Fan two-seater aircraft, which is entirely propelled by electricity

The still nascent technology to generate electricity from the sea may find its first economical uses far from the grid

Gamers search the physical world for hidden objects after receiving voice mails from people living in 2039 and 2065

Flights from London to New York City will run on jet fuel made from municipal solid waste by 2017

Greenhouse gases from transportation may become one of the greatest drivers of human-induced climate change, according to a draft of the forthcoming U.N. fifth assessment report on mitigation of climate change

New standards that reduce sulfur in gasoline will also curb the soot that contributes to climate change and lung disease

Major automakers suggest that cars powered by hydrogen fuel cells will finally hit the road this year

Test fleets of the alternatively fueled vehicles have run into a host of difficulties, but continue to move forward

Microfactories featuring 3-D printers may be the key to building more sustainable cars and trucks

Gasoline consumption continues to fall despite an economic recovery, thanks to more fuel-efficient engines and less driving

From funding the enemy to driving instability via climate change, fossil fuels are a problem for the military