ATLANTA, Georgia (CNN) -- When there's talk of reducing air pollution, electric vehicles seem to get much of the attention.
One such project is in the sprawling Indian city of Ahmedabad, where a fleet of buses running on compressed natural gas is reducing air pollution.
"With proper regulation and enforcement, gas provides a very substantial health benefit in reducing air pollution, " compared with coal-fired power plants, said Daniel Schrag, director of Harvard University's Center for the Environment.
As it remains in the atmosphere for a matter of weeks, some researchers have suggested that cleaning up its production could be the quickest way of curbing warming, as well as bringing health benefits to poor countries by reducing air pollution.
So, for now, Rive is focusing all his efforts on reducing the air leakage in his home.
"An inversion layer is keeping the smoke close to the ground, limiting visibility and reducing helicopter air operations, " Berry said.
For example, data on miles traveled, gasoline consumption, driving habits, and maintenance history can help improve fuel efficiency and save families and businesses money at the pump while reducing harmful air pollution.
We tend to think of them as alternatives to traditional car rental, but companies like Getaround see themselves as social enterprises designed to serve the greater good by reducing traffic and air pollution.
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The company also said Monday that while the cuts required are more than the initial agreement, it was planning to do them to meet a new EPA regulation aimed at reducing mercury and other air toxics from the nation's power plants.
In the past four years, it has reduced the size of its administrative staff by about 20%, to about 830 people, and closed some regional offices while reducing spending on conferences and air travel.
When people talk about reducing the energy and carbon impact of air travel, they almost always focus on improving the design of engines, wings and fuselages, or on using computer systems to shorten flight paths and eliminate delays.
Much of the Pentagon's fuel goes to the air force, however, and reducing the consumption of jet fuel is much more difficult.
Fog is actually decreasing in Milan, Schultz notes, as more rice fields are replaced by parking lots and other structures, reducing the amount of moisture floating into the air.
And 20 years ago, the utility industry, warnings of huge losses from the Clean Air Act, won concessions greatly reducing their obligations to install scrubbers on coal-fired power plants.
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The president can argue that he is endorsing policies that create jobs while also reducing the level of pollutants regulated under the Clean Air Act.
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Only by re-configuring the technological basics, they argue, can the airline industry square the circle of meeting increased demand for air travel while at the same time reducing the environmental damage caused by such travel.
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Arraycomm's approach allows the base station to constantly adapt the characteristics of the signal as the user moves around, keeping it focused, increasing spectrum efficiency and reducing interference from all the other signals permeating the air.
Lots of comments follow to the effect that closing La Guardia would merely send myriad extra passengers to JFK and Newark airports, creating traffic snarl-ups on the roads, reducing passenger choice and perhaps exacerbating congestion in the air.
In the winter, warm air near the ceiling is pushed downward, reducing heating bills.
The technology works by reducing frictional resistance between the vessel hull and seawater using air bubbles along the bottom of the ship.
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One is exhaust gas recirculation, which pumps cooled exhaust back into the engine air intake, lowering the combustion temperature and reducing NOx formation.
The only unambiguously effective method of reducing the long-term carbon and energy cost of air travel is to fly less a behavioral change, not a technological one.
The majority of the pollution is caused by vehicles on the road and experts say reducing traffic in the cities is the best way of improving air quality.
And, as well as all the environmental benefits of eliminating paint, the film-coating has the added advantage that it can save fuel by reducing the friction between the aircraft's skin and the air.
And certainly nevermind the fact that natural gas is reducing greenhouse gas emissions and providing us with cleaner, more breathable air.
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There was special emphasis on reducing energy consumption, improving conservation and solving the country's serious air, soil and water pollution.
The effect of these strengthened winds whipping across the sea surface is to bring deeper, more carbon-rich water up from below, thus reducing the surface layer's capacity to absorb more CO2 from the air.
For example, the Air Force's critical pilot shortage would be further exacerbated by reducing the production of new pilots through Undergraduate Pilot Training.
But the traffic increase has slowed progress in reducing emissions further, and people in many areas still suffer from nitrogen-related air pollution, including small particulates that get sucked deep into the lungs, and ground-level ozone - a strongly irritant gas formed by the action of sunlight on reactive nitrogen.
Much of the work is to update old infrastructure (heat, air conditioning, electrical, room technology), but the Ritz is also reducing the number of rooms and combining some of the smaller ones to add and enlarge suites.
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