Many people are trying to figure out whether natural gas really has legs as a transportation fuel.
Then, whether natural or artificial, the full weight of synthetic biology can be brought to bear on the problem.
At Cornell, for example, researchers have reached opposite conclusions on whether natural gas from fracking would be better or worse for climate change than burning coal.
We can't predict whether natural gas prices will hold up, but we can report that witness comments at Wednesday's congressional hearing suggested demand would likely remain brisk.
Wise readers, even of The Economist, should never forget that there are lies, damned lies and statistics, and among the most damnable are those relating to disasters, whether natural or man-made.
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From a virus's perspective, there will be a single mass of humans, tightly connected by air travel, with plenty of susceptible people to fuel the fire of new plagues, whether natural, accidental or deliberate.
Above all, the past few days have been a shining example of how Americans open our homes and our hearts to those in need and pull together in tough times to help our fellow citizens prepare for and respond to, as well as recover from, extraordinary challenges, whether natural disasters or economic difficulties.
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"Couples in more liberal communities, shaped by the modern impulse to control the circumstances of one's life, are more likely to practice family planning, whether by natural or artificial methods, " according to the book.
Whether from natural catastrophes, economic collapse or the slow encroachments of sand or water, it seems likely that at least some of today's cities will meet the same fate as Ozymandias, the king of kings who built a monument to himself.
As a result, his grand landscapes, whether industrial or natural, come more vibrantly to life than the characters who inhabit them.
Because, to continue being painfully and boringly obvious, this is the definition of who can be sued: a person, whether legal or natural.
By comparing the GPS and eLoran time signals with its internal clock, each probe can detect interference and determine whether it is natural or man-made.
Whether you look at natural gas, coal, or precious metals, there is a multitude of these examples of imbalances.
We have no idea whether this lack of natural exposure might influence how serious an epidemic of smallpox might be.
Mr Reyes said the family wanted to know the truth "regardless of whether he died of natural causes or was murdered".
It has always been some kind of shame in exhibiting our hair in its natural state whether inflicted by the media or ourselves.
So whether companies are drilling for natural gas or not, they continue to find it.
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But even Mr Draper's natural allies question whether he is forcing the movement to run before it can walk.
Protesters are consulting Natural England about whether nearby Goss Moor's Special Area of Conservation can be expanded under a European directive.
"The natural question is whether historically people in the north have eaten more infected food than people in the south, " he said.
In recent weeks, there has been a growing debate over whether to allow American liquid natural gas (LNG) to be exported to the global market.
Another question yet to be resolved is whether Senator Obama is a natural born citizen of the United States, a prerequisite pursuant to the U.S. Constitution.
"People have a real affinity for dinosaurs, whether as part of a natural history collection or even as interior decor, " says Thomas Lindgren, co-consulting director of the natural history department at Bonhams.
And right now it's way too early for me, after one practice when he competed against defensive backs, to say whether he's a natural catcher of the ball or not, and that's what we need to figure out.
The crux of the discussion came down to whether competition, with room for large and small entities, was a natural outcome of a market opening or whether it had to be prescribed by law in the run-up.
Crisis elicits a powerful human response, whether it be personal health, natural disaster, corporate crisis or national threat.
Every day individuals are taking on some of the most pressing challenges that our nation faces and coming up with real solutions, whether it is to rebuild after natural disasters, fight poverty, support our veterans and military families, or strengthen our education system.
The priority, both for all Arab states whether they be well endowed with natural resources such as oil, gas, gypsum or even fertile soil is the ability to create opportunity for an already high number of young people ready to enter onto the job market.
The short answer is: calling into question whether the processes of random variation and natural selection are all we really need in order to understand the origin of species.
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