Thursday, March 13, 2008
12:16PM - Stephen Johnson has got to go
The head of the EPA is a crony. A few months ago, he made headlines forbidding California from instituting higher fuel economy standards. That action went against the recommendation of all of the EPA's scientific and legal analysts, and was likely highly influenced by the
oil Bush administration.
Now he's again overruling the unanimous advice of his scientific advisory council who say that ground level ozone concentrations (which produce smog and cause heart attacks and asthma) should be lowered to 60 to 70 parts per billion.
The EPA analysts who made the recommendation conducted a cost-benefit analysis to account for both health benefits to society and costs to industry, yet Mr. Johnson, in his infinite wisdom, decided that he had a better idea of what the limits should be. By overruling his analysts, he is essentially making a socially and economically inefficient (by every measure but the polluters' bottom line) trade of human health for corporate dollars.
In the words of William Becker, "It's disheartening that once again EPA has missed a critical opportunity to protect public health and welfare by ignoring the unanimous recommendations of its independent science advisers."
Thursday, March 6, 2008
10:45PM - Who needs traffic lights?
Apparently Vietnam doesn't.
Friday, February 15, 2008
4:25PM - Super Mario Galaxy
For those of you who own a Wii but don't yet have this game, all I can say is: Get it now! As almost every review on the web will attest the gameplay is top-notch, but to me the most impressive aspect was undeniably the music. The music manages to create a superbly matched mood for almost every setting in the game. I threw together a YouTube playlist consisting of some my favorite songs, roughly in order of preference.
For those curious, my death stats: Mario: 264, Luigi: 162
Wednesday, January 23, 2008
From the New York Times:
Recent laboratory tests found so much mercury in tuna sushi from 20 Manhattan stores and restaurants that at most of them, a regular diet of six pieces a week would exceed the levels considered acceptable by the Environmental Protection Agency.About 40% of mercury emissions in the US come from coal power plants. I would hazard a guess that the crazy growth of coal power plants in China and India may be behind the increased mercury contamination.
Sushi from 5 of the 20 places had mercury levels so high that the Food and Drug Administration could take legal action to remove the fish from the market. The sushi was bought by The New York Times in October.
Already, China uses more coal than the United States, the European Union and Japan combined. And it has increased coal consumption 14 percent in each of the past two years in the broadest industrialization ever. Every week to 10 days, another coal-fired power plant opens somewhere in China that is big enough to serve all the households in Dallas or San Diego.
To make matters worse, India is right behind China in stepping up its construction of coal-fired power plants — and has a population expected to outstrip China's by 2030.
Wednesday, January 9, 2008
From This American Life:
A Muslim woman persuades her husband that their family would be happier if they left the West Bank and moved to America. They do, and things are good...until September 11. After that, the elementary school their daughter goes to begins using a [district-wide approved and distributed] textbook that says Muslims want to kill Christians. This and other stories of what happens when Muslims and non-Muslims try to communicate, and misfire.Listen to the second story segment (starting at 7:10) here. The teacher and administrators saw nothing wrong with the textbook, which stated that Muslims hate Christians, Muslims hate Americans, the Koran teaches war and hate, etc. The family was essentially chased out of the neighborhood (through harassment) for being Muslim. The story doesn't mention the exact town or state, but it was somewhere on the east coast.
I thought intelligent design in textbooks was bad, but this? This is a whole different order of magnitude of badness. Separation of church and state? Freedom of religion? Will we soon be saying goodbye to these aspects of American life? The mother wants to believe that this is an isolated incident, but I'd guess there are similar stories happening across the US.
3:20PM - First-mover advantage
I've recently heard many others complain about how unfair it is for two states to have such a disproportionate influence over the nomination process. If it were up to me I'd have all of the primaries on the same day. Of course, Iowa and New Hampshire would have a cow over losing their first-mover advantages.
Why is it that the 1% of US voters who live in these two lucky states have such a huge influence on our political process? It's apparently human nature:
You will recognise your predicament in their results. First, when orders were called out publicly, people tended to avoid duplicating the choices of others. Second, that mattered: the people who chose first were significantly happier with their choices than those who felt obliged to choose whatever beer was left over. (This survey was done in the US. When transferred to Hong Kong, people instead tended to emulate the first choice. But, again, those who chose first were happier.)Just as hearing someone else's beer order at a restaurant affects our decision, hearing who Iowans and New Hampshirites declare "the winner" affects our voting behavior. Some people just like voting for "winners". Others are contrarian and prefer voting against the "established". I have a feeling there are more people in the first category, which is why so much time and effort are spent in the first-mover states. Regardless of which direction the bias skews, that a bias exists at all is a problem that should be addressed.
Sunday, January 6, 2008
Watched the Democratic half of the debate tonight, and you know... it wasn't all that helpful. The moderator stated at the beginning that he wanted the debate to be more of a dialogue between candidates rather than a Q&A session between the moderator and each candidate in turn, but in the end I didn't think he was very successful. Rather than highlighting differences between candidates, all we really got were variations on the following exchange:
A: I'm different because, unlike B, I believe that X.
B: That's not true, I believe that X as well.
The mudslinging was a total turn-off. Richardson tried to call the others out on it but ended up joining in later on.
It was interesting to see Richardson try to pass off a carbon cap-and-trade system as being less costly for consumers than a carbon tax... I was glad Obama called him out on it. We need leaders willing to publicly state the reality that reducing carbon output by any method will require some sacrifice. That is the only way to get the public to accept it and move forward constructively.
In the end, I thought Edwards came out of the debate looking the best due to his passionate speech against special interests. It's unclear though what exactly he would do to contain them once he got to the White House. I think I like all of the candidates a little more now than I did before watching the debate, especially Hillary.
Thursday, January 3, 2008
It's apparently a common misconception that leaving the heat on at home while you're out takes less energy than turning it off (or lowering the temp) and then heating it back up later. This idea probably stems from the large amount of energy necessary to bring a cold house up to a comfortable temperature (a high "peak load"), but it ignores the energy being wasted while you're away (a high "average load").
An easier way to determine the total amount of energy being used in either scenario is to consider the rate at which heat leaves your house. The total amount of heat that leaves your house is equivalent to the amount of heat your heater has to produce to maintain a set temperature. So the goal is to minimize heat loss. According to Newton, the rate of heat loss is proportional to the temperature difference between the house and the outside. In other words: the warmer the house, the higher the heat loss. The figure below (linked from this blog post, thanks Patricia!) helps to illustrate how much energy would be saved by turning down the thermostat at night.
From the article:
The study was the first ever attempt to provide an objective evaluation of the odour of flatus, Levitt explains. Volunteer judges, blinded to the identity of the generating gender, were asked to rank the potency of the end product.
Volunteer producers -- primed by a diet of pinto beans -- farted into aluminum bags via a rectal tube. The contents of the bags were measured for volume and for sulphur concentration. (Sulphur gases give farts their foul odour.) Syringes full of gas were withdrawn from the bags and wafted by the nostrils of the unfortunate judges.
"Some journal reviewed the worst jobs ever performed in science and this became the number 1,'' Levitt says with a chuckle.
Friday, December 28, 2007
3:13PM - I &hearts my car
CNN/Money.com posted a list of the Best Cars of 2007:
- Best-selling car: Toyota Camry
- Best-selling vehicle: Ford F-150
- Most satisfying car: Mercedes-Benz S-class
- Best-loved car: Toyota Prius
- Safest car: Ford Taurus
- Best fuel economy: Toyota Prius
- Best resale value: Mini Cooper
- Most reliable: Toyota Prius
- Most stolen: 1995 Honda Civic
Friday, October 12, 2007
A few articles from the past couple of days:
Ohio school shooter gave many warnings
Police: Pennsylvania boy planned 'Columbine' event at high school
'Killadelphia': Driver shoots slow bicyclist
Third-Grader Points Gun On School Bus
This is really disturbing. I wonder if any presidential candidate will make gun control a campaign issue in the upcoming race. It's certainly an issue in my mind.
Monday, September 17, 2007
3:55PM - Saving for Retirement
It really shouldn't be so complicated. Recently I helped Jess sign up for her 403(b) plan at work, and it wasn't nearly as straightforward as it should have been.
The current wisdom for anyone investing in financial markets is to buy index funds. There have been so many studies and books written on this subject, I think we should finally accept that owning individual stocks and trying to time the market is a waste of effort and money, and that paying someone to do so for you (in the form of an actively managed mutual fund) is no better.
The next step after recognizing that you want to invest in index funds is to determine how much of each type of index fund you should own. There are lots of online asset allocation calculators to help you figure this out. Fortunately, many financial service companies offer target retirement funds that do this for you. Unfortunately, some of them charge way more than they should.
Jess' retirement plan only offers a select menu of Fidelity funds to choose from, which was disappointing because I tend to prefer Vanguard's funds. I thought Fidelity's target retirement fund, the Fidelity Freedom 2045, would be perfect... that is until I discovered the expense ratio on the fund is a whopping 0.83%! Now, this might not sound like much, but consider that $100k invested for 40 years at 8.00% yields $2.17m, while the same $100k at 7.17% yields $1.60m, or a difference of nearly $600,000 ($15,000 / year)! That's right: after 40 years, you'll have paid Fidelity $15,000 per year to hold onto your money for you.
I'm not saying you'll ever be able to find a fund that doesn't charge any expenses. I'm just saying that 0.83% is not as negligible as it sounds. For comparison, Vanguard's Target Retirement 2045 charges 0.21%, which would leave you with $2.01m after 40 years. The best target fund family I've seen is the Federal Thrift Savings Plan L Funds, which charges only 0.03% but, as far as I know, is only available to federal employees.
In the end, I decided to take a DIY approach and buy the components individually. Long story short (chorus: too late!) my intention was to buy 50% Spartan 500, 25% Spartan Extended, 20% Spartan International, and 5% Emerging Markets, but Jess' plan didn't have Spartan International as an option, so I settled on the Diversified International managed equity fund as a replacement. The resulting average expense ratio is 0.30% (which corresponds to $1.94m in our example). Had the Spartan International Index Fund been available, I would have gotten the average expense ratio down to 0.14% ($2.06m).
Friday, August 31, 2007
4:38PM - Stupid Quote of the Day
"The public does indeed have a very considerable interest in preserving our natural environment and especially relatively scarce whales. But it also has an interest in national defense. We are currently engaged in war, in two countries."That was Judge Andrew Kleinfeld of the 9th U.S. Circuit Court of Appeals lifting the ban on the U.S. Navy's use of high-power sonar during training exercises off the coast of Southern California.
Since when were we fighting Iraqi and Afghan insurgents in submarines? Last I checked, Afghanistan was land-locked, and Iraq had less than 20 miles of shoreline. Are we planning on scanning for terrorists in Baghdad's swimming pools?
Special Interests: 9/11! 9/11! War! War! 9/11!
Public: Oh S%#@!! <frantically signs over rights to environmental protection, privacy, and intelligent thought>
Saturday, August 11, 2007
Analysts See ‘Simply Incredible’ Shrinking of Floating Ice in the Arctic
And yet one of the first things we think about is how to get our hands on the oil underneath the melting ice:
The progressive summertime opening of the Arctic has intensified a longstanding international tug of war over shipping routes and possible oil and gas deposits beneath the Arctic Ocean seabed.More on the flag-planting theatrics.
Last week, Russians planted a flag on the seabed at the North Pole. On Wednesday, Stephen Harper, the Canadian prime minister, began a tour of Canada’s Arctic holdings, pledging “to vigorously protect our Arctic sovereignty as international interest in the region increases.”
Tuesday, August 7, 2007
12:48PM - The Truth About Denial
The cover article on this week's Newsweek should be required reading for all high school students in America.
Since the late 1980s, this well-coordinated, well-funded campaign by contrarian scientists, free-market think tanks and industry has created a paralyzing fog of doubt around climate change. Through advertisements, op-eds, lobbying and media attention, greenhouse doubters (they hate being called deniers) argued first that the world is not warming; measurements indicating otherwise are flawed, they said. Then they claimed that any warming is natural, not caused by human activities. Now they contend that the looming warming will be minuscule and harmless. "They patterned what they did after the tobacco industry," says former senator Tim Wirth, who spearheaded environmental issues as an under secretary of State in the Clinton administration. "Both figured, sow enough doubt, call the science uncertain and in dispute. That's had a huge impact on both the public and Congress."What truly amazes me is the potency of the political influence of lobbying groups that represent the interests of a minuscule part of the American population (in this case, oil and coal companies). Is this how democracy is supposed to work? Why does it seem like it's always the Republicans who favor special interests over the interests of the American public? Tobacco, oil, coal, pharmaceuticals, health insurance, the top income bracket -- they all look to the GOP to put their interests before the interests of America in the national debate and in our public policy.
Thursday, August 2, 2007
I remember a demonstration from one of my high school or middle school science classes that was supposed to show that air has mass. Two identical deflated balloons were tied to either end of a meterstick and then balanced from a string tied to the middle of the stick. One of the balloons was then inflated, and its end subsequently dipped lower than the end with the still empty balloon. The justification for this behavior was that the weight of the air inside the balloon made it heavier than the empty balloon, thus pulling its side down, and that was that.
Image courtesy of LDAPS
Ever since I learned about Archimedes' principle, this demonstration has really bothered me. It's supposed to be showing that air has mass, but the reasoning behind the demonstration ignores the fact that the air surrounding the balloons also has mass. The presence of the surrounding air leads to an opposing buoyancy force almost exactly canceling the weight of the air inside the balloon.
The only reason the inflated balloon drops is because the air inside is compressed and thus denser than the surrounding air. If the balloon were to lose its elasticity and expand so that the air inside was the same pressure as the air outside, two things would have changed. First, the balloon would be bigger. Second, the (now even larger) balloon would exactly balance the deflated balloon.
I think this demonstration would have been both cooler and more interesting if it had explained that the density of the compressed air was the real reason for the imbalance, rather than just leaving it at, "The air inside the balloon has weight, and pulls the balloon down."
Wednesday, July 25, 2007
I'm solidly in the anger phase. My hand hurts from punching the table. This is incredibly sad and completely unfair. James was both a friend and a coauthor of mine. He was easily the smartest guy in the Random Matrix Theory class I took with him, and he was only a sophomore at the time. Damn it all.
Rest in peace James. We'll miss you.
Tuesday, June 26, 2007
2:22AM - The Omnivore's Dilemma
(Image courtesy of Alexis Rockman)
I finally got around to reading this incredible book after the glowing recommendations of enhat and simplyjeska. If you've ever talked to anyone who has read it, you'd know that corn is in basically everything we eat. The reason for this is wonky agricultural policy that subsidizes the snot out of corn production in the US. Is this a bad thing? On face value, it didn't seem like a huge deal to me (just another market inefficiency); however, Pollan points out that because corn is so cheap, much of our other food has been or is being engineered to grow on corn rather than whatever it grew on naturally.
As a result, whenever you go to your local Shaw's and buy chicken, beef, or salmon, you're probably buying corn-fed chicken, corn-fed beef, or corn-fed salmon. Again, what's the big deal? Since these animals were not designed to subsist on a corn diet, they get sick and become infested with bacteria such as E. coli. The animals are therefore fed loads of antibiotics and growth hormones so that they quickly get to slaughter weight before dying of infection. Does this sound like healthy meat to anyone?
I had once thought that people avoided meat with antibiotics and growth hormones because they didn't want those substances in their food (this is probably also true to some extent). What I didn't realize is that it's mostly what those substances indicate that's bad rather than the substances themselves.
The animals that produced the industrially farmed meat found at Shaw's almost certainly did not lead happy lives. They live in ridiculously cramped quarters, wallowing in waste. I've felt a vague sense of guilt about eating animals for several years now, and after reading Omnivore's Dilemma, I've come to the decision that I should restrict my meat consumption to "happy" meat: animals that lived their lives similar to the way they would have chosen to live them (free-range and on a natural diet).
As to why I don't become an outright vegetarian, I'd like to claim it's because I subscribe to a utilitarian moral philosophy (a happy pig is better than no pig at all), but the truth is probably closer to social pressure and a weak will (like Pollan, I do love a good steak).
This is where Jess and I will be getting our grass-fed meat for the next six months.
Wednesday, April 18, 2007
In the wake of the recent tragedy, I thought I'd put together a webpage to help remind myself that many things in this world are still beautiful.
The song is by Israel Kamakawiwo'ole, and Jess and I heard it at least a dozen times when were in Hawaii.
Thursday, April 5, 2007
2:50AM - March Prius Madness!
One of yesterday's CNN/Money Headlines: Toyota pushes Prius incentives! That must mean Prius sales are weakening, and Toyota can't seem to get rid of their unwanted hybrid inventory, right? Apparently not.
Toyota sold 19,156 Priuses in March. Compare that to Ford's sales of some of its most popular cars and SUVs: 17,065 Focuses, 15,790 Fusions, 10,915 Edges, and 12,876 Explorers. That's right: almost 50% more people bought Priuses (last redesigned in 2004) than Ford Explorers (last redesigned in 2006) last month! The Prius even compared well with the Camry (America's best selling sedan), with 1 Prius sold for every 2.2 Camrys sold (or 1 Prius for every 1.9 Accords for you Honda fans out there). Is the Prius mainstream yet?
One plausible explanation for the March demand spike is the April 1 reduction of the hybrid tax credit as it applies to Toyotas. The Prius' tax credit was slashed from $3,150 to $1,575 on October 1 last year, and fell further to $787.50 four days ago. On the other hand, there should have been a corresponding spike in September last year.
The reason for the credit reductions is this: the law specifies that after a manufacturer has sold 60,000 qualifying vehicles, the credits begin to phase out. The justification is "fairness" to automakers who were late to the hybrid party. Toyota is the only automaker that has hit the 60,000 mark so far (and it did so in June 2006). Stupid rule, huh? At the risk of repeating myself (uh oh, too late), raising gas taxes would have been a simpler, fairer, and more effective way to encourage gasoline conservation with the added bonus of not discriminating between hybrids and highly efficient regular cars.