The major advantage is the reduction of pollutants and greenhouse gases emissions not only within large cities but also globally.
One of the crucial challenges of the aviation industry in upcoming years is to reduce emissions not only in the vicinity of airfields but also in cruise.
Anthropogenic methane emissions not only pose an increasing global problem but can also be seen as an untapped renewable resource for hydrogen or liquid fuel production.
For instance, the carbon dioxide disposal pipe would be large enough to carry emissions not only from the power plant but also from factories nearby, a potentially valuable service if the government cracked down on emissions.
Casting family planning in the global south as a solution to resource stress, migration, terrorism or rising carbon emissions not only unfairly pins blame for these crises on poor women, it also misdiagnoses the problem.
Fortunately, doing something to cut emissions not only reduces these risks, but also has knock-on positive health effects — for instance, by cleaning the air and thus cutting down on particulate pollution, which has its own health cost.
Converting to sources such as solar, wind, and geothermal will produce electricity without carbon emissions; not only will these sources be both reliable and renewable, they will helpe make the transition to electric transportation smoother because these technologies can be adpated depending on a region's available resources.
The continuing reluctance to engage to the greatest possible extent in flexible market-based ways of reducing emissions not only makes control of greenhouse gases vastly more expensive than it would otherwise be (a good thing, admittedly, in the view of many environmentalists).
Agriculture is a huge part of global emissions, not only through the farts and burps of cattle but also through the land use change to grow food for those cattle - lots of the soya produced in countries with high deforestation rates is for feeding animals for meat and dairy.
