• Technology

    How Much Power Does The Human Brain Require To Operate?

    By Jeremy Hsu Posted on 11.6.2009 21 Comments

    According to Kwabena Boahen, a computer scientist at Stanford University, a robot with a processor as smart as the human brain would require at least 10 megawatts to operate. That's the amount of energy produced by a small hydroelectric plant. But a small group of computer scientists may have hit on a new neural supercomputer that could someday emulate the human brain's low energy requirements of just 20 watts--barely enough to run a dim light bulb.

    11.13.2009 at 12:03am - Comment by genXer

    Does this mean that Windows will be even MORE troublesome than it already is? j/k The human brain will never be duplicated, but with tech advances a machine can be taught to make more and more "judgments" based on a complex set of rules. Still, since we have to program the machines, that makes them forever less capable than we are because we don't fully comprehend the complexity of our own minds, and on top of that no programming is perfect. Never mind the unquantifiable aspects of our minds like intuition, reading inflections of the spoken word, along with a moral conscience and emotion. We are amazing beings! Maybe someday we can make robots to mow our grass and cook for us, but don't expect something with independent and creative thought.

  • Science

    Five Human Achievements That Could Top Walking on the Moon

    By Stuart Fox Posted on 7.20.2009 62 Comments

    Possibly the single most influential event in the public's interest in science and technology (not to mention one of humankind’s greatest adventures), the Apollo 11 mission touched the collective dreams of millions, while pushing science and technology swiftly forward at an unprecedented pace. But in the decades since man first walked on the moon, science has advanced so rapidly that technology which even a few years ago might have been considered magic has become commonplace. Even so, it would be naïve to assume that Apollo 11 ever represented science and technology’s pinnacle, and that nothing forthcoming will similarly explode the world’s collective dreams and perceptions of what it means to be human. So what’s next? What will be the next worldwide event or discovery that fundamentally changes the way we look at ourselves and the universe we live in?

    7.25.2009 at 12:44am - Comment by genXer

    ^ Ingeld has it right. Humans certainly don't need anything except their own depraved minds to invent ways to commit evil. Actually, many scientific advancements have been made possible by the generous support of religious people who helped start major universities. In the article, "12.2 cents per kilowatt hour" in 2020? That would be a decrease for those of us in Texas. Bring it on! Besides the difficult task of keeping us from killing each other (which will always be a work in process), I think we need to focus greatly on energy. I am absolutely for wind and solar power, in addition to any other like source, such as tidal. We can't be afraid to embrace clean energy. Yes, we will pay for it like we always have, but those who sell the energy would be those who invest money in it, and not those who happen to be at a geologic advantage, holding others at ransom. It would also grow a sector of jobs that would be much more stable than oil-related jobs. Additionally, we would all benefit from the obvious health improvements of having clean air. I have driven across vast stretches of the U.S. that are windblown and not used for a lot of things. Wind power has big potential. If the technology around solar could be developed to a point where it is viable in new construction without skyrocketing costs, then we would create more energy each time we build more rooftops, helping us to be self-sustaining. We simply have to get vehicles off of oil, because the scenario is not pretty. The world is industrializing and consuming more oil, while production is declining. There again, an energy problem. The ones who solve our energy problems will be heroes who eclipse in totality those who walked on the Moon. With apologies to Neil and the guys, their achievement was more of a demonstration of our capability as a nation during the Cold war, than it was a solution to a specific problem.

  • Science

    What a Difference 200,000 Years Makes

    By Molika Ashford Posted on 3.17.2009 7 Comments

    Peking Man, a group of Homo erectus discovered in the 1920’s near Beijing (then Peking), China, has been back in the spotlight over the last few days. A new estimate from American and Chinese scientists dates the fossils (and their associated population of Peking men and women) 200,000 years older than earlier measurements. The researchers reported their finding on the cover of last week’s Nature.

    3.20.2009 at 08:34pm - Comment by genXer

    Let that be a lesson on "reliable" scientific dating. I'm sure the 500,000 year date was stated as fact previously, and now we are supposed to believe this new date which is almost 50% older than before?? This area of science will always be a guessing game. There is simply no way to conduct a controlled experiment that has validity. Also, basing info. on other unproven info. does not qualify as proven fact, either. If we are honest we must come to the conclusion that there are certain things we will never know. This would be better than coming up with wild theories then teaching them to our kids, perpetuating falsehood.

  • Science

    Is Pot a Performance Enhancer?

    By Brett Zarda Posted on 2.10.2009 23 Comments

    We didn’t want to write about it. Seriously, we didn’t. Sure, Michael Phelps has digital technology, the 24-hour news cycle and precision blown glass to blame for his plight but we’re better than that.* But when US Swimming went and suspended Phelps for two months for, ultimately, acting his age, we felt compelled to write something. The 'Science' part of Popular Science restricts us from condemning the insanity of the punishment (note, however, they did nothing following his 2003 DUI).

    2.13.2009 at 06:32pm - Comment by genXer

    What if Michael was coming down off of a high when he showed up for swim meets, would it matter then? What if he showed up with a hangover? My point is when some try to use the rationale about separating private life and public life, eventually the two will come face to face, just like it did here. US Swimming has every right to do what they please. Really, if anyone does not want to follow the rules they are perfectly free to quit the team. It doesn't seem unreasonable that US Swimming wants to maintain a positive image and not have the reputation of illegal doings on their team. With U.S. expectations that Michael was going to win something in China, how would we feel now if Michael had blown it in China (no pun intended) and failed to medal at all? Would the drug abuse have mattered more to us? It's obvious that he did not let it affect his performance, but it could have been different with someone else who wasn't as gifted or as disciplined. As an aside, why an athlete would want to inhale smoke, and unfiltered smoke on top of that? There's no question that many of us have done foolish things in our youth, but it did not mean that we escaped the consequences. Out of those mistakes we (hopefully) learn to become better citizens. The team may have done Michael a favor in the long run. As far a performance enhancer (huh?) Mary Jane probably belongs in the category with alcohol. No great debate there.

  • DIY

    Dot • Watch

    By Dave Prochnow Posted on 2.4.2009 4 Comments

    Trying to squeeze some new life out of the tried-and-true clock paradigm can be a frustrating design challenge. Likewise, creating a clock from the absolute minimal number of parts (e.g., no more than 6 components) can lead to some sleepless nights. Finally, trying to shoehorn everything into an itty-bitty space (roughly 2-x3-inches) and making it a portable, battery-powered clock can make even a seasoned project builder scream “Uncle!” Getting everything to work like, err, clockwork, priceless.

    2.8.2009 at 04:00pm - Comment by genXer

    Nice toy...but no useful innovation. Why do we need to complicate the clock now?

  • The Environment

    Ethanol—Better Than We Thought?

    By Sean Captain Posted on 1.29.2009 22 Comments

    Common sense says that burning a plant you regrow every year is better for the atmosphere than spewing out carbon dioxide that’s been buried underground for eons. But the truth behind biofuels and petroleum often seems to defy common sense. Neither ethanol nor gasoline bubbles out of the ground ready to put in your tank. So to figure out which one does less environmental harm, you have to calculate all the energy that goes into making it.

    2.7.2009 at 12:35pm - Comment by genXer

    With populations growing and energy demand ever increasing, how could ethanol fill the gap in our energy needs? In a ethanol scenario, more energy requirements = more land to grow corn. Not all land is suitable for growing, as well as land that isn't laid fallow occasionally will yield diminishing crops. What of a crop failure due to any number of factors such as disease, natural disasters, etc, do we walk? Ethanol doesn't stand on its own as a source of fuel, but as a supplement to oil. This is a poor solution for the long term. Instead, I think our research money is better spent to harness solar, wind and ocean power for producing electricity. Those technologies can be used for powering all our energy needs including automobiles, and are limitless sources. Leaps are also being made in the areas of energy storage, which means that long range electric cars will soon be a possibility.

  • Shimano Dura-Ace 7970 Di2

    By Posted on 11.11.2008 Comments

    For years, the increased accuracy, smoothness and reliability of electronic shifting has been perhaps the ultimate goal for high-performance-bike designers. After several companies’ attempts failed—suffering from breakdowns in bad weather, poor battery life or unbearable complexity—Shimano’s Dura-Ace Di2 has finally delivered it.

    11.22.2008 at 03:04pm - Comment by genXer

    Wait...if the battery pack runs down you can't shift?? I'd rather see cables remain in the mass market and let the elite riders fiddle with batteries. I've only had one problem with shifters in 4000 miles and it was from a shifter handle itself wearing out. The cables have never been a problem for me. Especially for mountain bikes but also for all, what if a wire gets cut in a crash or water gets into the electronics? This seems like a needless complication to a simple machine.

  • DIY

    Making Glass in a Grill [With Video!]

    By Theodore Gray Posted on 4.9.2009 10 Comments

    All the components of glass can be found in two places: the beach and the laundry room. It’s possible to melt pure white-silica beach sand into glass, but only at temperatures of 3,000 to 3,500°F. Washing soda, lime or borax (a traditional laundry aid) added to the sand disrupts the quartz-crystal structure of silica and reduces the required temperature to a more practical, though still dangerous, 2,000°F, which I achieved with a backyard grill and a vacuum cleaner.

    11.20.2008 at 10:30pm - Comment by genXer

    Cool experiment...I have a Weber grill just like it. How did they not melt the aluminum legs on that thing??

  • Gadgets

    Canon G10: SLR Takes a Holiday

    By Posted on 7.29.2009 6 Comments

    I’m an old-school SLR guy. I like big, heavy cameras that I can swing from the shoulder strap to scare thugs away. So I was pretty skeptical of a point-and-shoot, even a high-end model. But when the 14.7-megapixel Canon G10 arrived, I was surprised at how sturdy it is (and still slips into my shirt pocket!). Without glancing at the instruction manual, I popped in the battery and a little SD card from my wife’s point-and-shoot and headed out. Right away I was thrown back to being eleven years old again, taking pictures just because I could. It was pure joy.

    11.8.2008 at 10:06am - Comment by genXer

    I can't see why someone would opt for anything other than an SLR with that price tag, unless they are really hung up on size.

  • Cars

    2009 Honda Fit: A Little Economy Car Grows Up, a Little

    By Mike Spinelli Posted on 9.8.2008 9 Comments

    The first Japanese hatchback I ever loved was a borrowed, battered 1978 Honda Accord CVCC. It was punchy and raw, light as a laundry basket and it loved to be tossed into a dusty bend and coaxed back out. It was just the thing for a teenaged-hack Stig Blomqvist with more hormones than money, and I returned it reluctantly, a changed not-quite man.

    10.13.2008 at 10:26am - Comment by genXer

    Yes, why doesn't the Fit get better mileage indeed! My '04 Accord is a 34 mpg performer on the highway, and has much more power and room. This car seems to have an identity crisis. Economy car? Sorta. Sporty car? Sorta. Roomy car? Sorta. Ok Honda, what purpose does this car serve? The Civic used to do much of what this one does, until it got larger, heavier, more expensive, and more refined. Does anyone see a pattern here?

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