Scientists think microalgae could be the answer to slashing CO2 levels and serve as a more effective, eco-friendly biofuel
By Jaya JiwatramPosted 07.18.2008 at 1:39 pm 9 Comments
Last week scientists were extolling the virtues of duckweed—this week, another type of pond scum is being called a possible savior. Norwegian scientists believe microalgae could slash CO2 levels—responsible for a lot of our global warming woes—and even be tapped for a more effective biofuel in the future.
A new report shows that biofuels are linked to higher food prices and increased poverty, but European Union doesn’t take heed
By Holly OtterbeinPosted 07.07.2008 at 4:38 pm 17 Comments
Are Biofuels Starving the World?
It's common sense—people need food first, fuel second.
But today, Britain became the first Western nation to announce that its biofuel production will be curbed, since it's likely causing rising food prices and rainforest destruction.
A Turkish design team dreams up a self-sufficient craft for the eco-conscious yachting class
By Catherine PricePosted 06.20.2008 at 4:23 pm 3 Comments
Volitan may look more like an X-wing fighter than a boat, but the four-wing structure keeps it stable while maximizing maneuverability.
For most of history, sailboats were by definition pollution-free. Now, however, even purists use outboard motors to get their three-sheeters in and out of the harbor. Including conventional motorized boats, there are more than 10 million hydrocarbon-burning marine engines in the U.S. alone.
A PopSci contributor's experiment with a Honda Civic GX natural gas vehicle turns into a high-return investment on eBay
By Eric AdamsPosted 05.27.2008 at 1:35 pm 8 Comments
We reported last week on how feebly powered, fuel-sipping 1990s-vintage hatchbacks have been lighting up the used car market recently due to skyrocketing gas prices. In an interesting twist to this phenomenon, I actually benefited myself somewhat from this hysteria when I had to sell my beloved natural-gas-powered 2006 Honda Civic GX last week on eBay, turning it into one of the smarter investments I made all year.
Amidst far-off ideas for alternative fuel sources, the green stuff still proves promising
By Matt RansfordPosted 04.03.2008 at 10:21 am 1 Comment
Earlier this week, we reported on research efforts to produce hydrogen gas for fuel cells through artificial photosynthesis and discovered the technology was still a long way off. Well, how about good old natural photosynthesis? That, too, is a process in its infancy because there are quite a few things we need to manipulate in order to produce enough hydrogen to make it worth our while.
Biologists can now create organisms that have never before existed—including designer bacteria that turn sugar into fuel
By Amanda Schaffer Posted 04.01.2008 at 9:56 am 24 Comments
It could be an aerial photo of an oil spill: liquid spheres pooling, oozing, dwarfing a bedraggled landscape. I half expect to zoom in on poisoned seal pups or waterbirds dragging their oil-soaked feathers. But the scene is microscopic. The “landscape” is made of E. coli. And what’s happening is exactly the opposite of what it seems. The little bugs aren’t drowning in fuel. They’re making it.
A biodegradable and less harmful engine fuel has an unusual provenance
By Matt Ransford Posted 03.06.2008 at 7:58 am 2 Comments
Green Earth Technologies
Two-stroke engines are simple, light, and powerful. Unlike a four-stroke engine (the kind you find in a car), they can be operated at any angle. That's why you find them in lawnmowers, leaf blowers, chainsaws, and on boats as outboard motors. They come with significant disadvantages, however. They are terribly inefficient with fuel. They don't have a dedicated lubrication system and so burn the oil they use (if cars used two-stroke engines, they would burn a gallon of oil every 1,000 miles). And worst of all, they leak fuel through their exhaust by design.