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Is natural gas a good source of energy?
science.howstuffworks.com/environmental/energy/natural-gas-energy.htm
When people talk about energy and natural gas, opinions differ. Is it harmful to the environment, or the last great clean energy source?
Is science phasing out sleep?
science.howstuffworks.com/life/sleep-is-so-last-year.htm
Human beings have always found ways to ward off the effects of sleep deprivation. The newest wake-up pill has all of the benefits of caffeine and amphetamines with none of the down sides.
Is spinach really a good source of iron or not?
science.howstuffworks.com/innovation/edible-innovations/spinach-good-source-of-iron.htm
Comic book character Popeye is synonymous with being strong thanks to all the iron in the spinach he eats. But lately, there's been some talk that spinach is not all that good a source of iron and, in fact, it got the claim by error.
Is steel still the best material for building?
science.howstuffworks.com/engineering/structural/steel-best-material-for-building.htm
Steel is getting more expensive because the prices of iron and coal are rising. Are there alternatives to steel that can do the same job -- or better -- for less?
Is the American Flag Still on the Moon? Objects Astronauts Left Behind
science.howstuffworks.com/question188.htm
Apollo astronauts left a lot of stuff behind on the moon. Can you see any of that from Earth, even with a telescope?
Is the Dream of Cold Fusion Still a Possibility?
science.howstuffworks.com/environmental/energy/cold-fusion.htm
Though a highly publicized 1989 cold fusion breakthrough was subsequently discredited, research is still being conducted in hopes of future success.
Is the Mystery of Namibia's Fairy Circles Finally Solved?
science.howstuffworks.com/science-vs-myth/unexplained-phenomena/namibias-fairy-circles.htm
In the Namib Desert, fairy circles have stumped researchers for decades. Where did they come from? One scientist thinks he's solved the mystery.
Is the U.S. Government Hiding New Proof of Alien Life?
science.howstuffworks.com/space/aliens-ufos/is-us-government-hiding-new-proof-alien-life.htm
The government's secret Advanced Aviation Threat Identification Program has spent millions researching UFOs and alien life. Are they covering up their findings?
Is the amount of mercury in CFLs more dangerous than the amount in fish?
science.howstuffworks.com/environmental/green-science/cfl-mercury.htm
Mercury in CFLs and fish are the best known sources of mercury exposure. Learn about mercury in CFLs and fish and find out which should cause more concern.
Is the brain hardwired for religion?
science.howstuffworks.com/life/inside-the-mind/human-brain/brain-religion.htm
Is the brain hardwired for religion? Proponents of neurotheology think it may be. Learn how science is figuring out if the brain is hardwired for religion.