Dr. Henry Miller, senior fellow at the Hoover Institution, and Gregory Conko, senior fellow at the Competitive Enterprise Institute, in their Forbes article "Rachel Carson's Deadly Fantasies" (9/5/2012), wrote that her 1962 book, Silent Spring, led to a world ban on DDT use.

Brothers Tamerlan and Dzhokhar Tsarnaev, who are accused of setting the bombs that exploded at the Boston Marathon, attended the University of Massachusetts. Maybe they hated our nation before college, but if you want lessons on hating America, college attendance might be a good start. Let's look at it.

One definition given for insanity is doing the same thing over and over again and expecting different results; it might also be a definition of stupidity. Let's look at some cities where large percentages of black Americans live under poor conditions.

The liberal world vision and reality are often at variance, for example, with equal pay for equal work.

What we see on college campuses represents a dereliction of duty by boards of trustees, which bear the ultimate responsibility. Wealthy donors who care about the fraud of higher education should recognize that there's nothing like the sound of pocketbooks snapping shut to open the closed minds of college administrators.

Suppose you buy a gallon of gas for $3. How much did it cost you?

A couple of weeks ago, Black Entertainment Television founder Bob Johnson, speaking at The National Press Club, said the nation "would never tolerate white unemployment at 14 and 15 percent." Black unemployment has been double that of white Americans for more than 50 years.

The fundamental problem crippling low-income minority students is school behavioral disorder. Its visible manifestations are graffiti, broken and vandalized furniture, fights, sexual activity, drug use in the bathrooms and rowdy behavior.

Are women equal to men? Are Jews equal to gentiles? Are blacks equal to Italians, Irish, Polish and other white people? The answer is probably a big fat no, and the pretense or assumption that we are equal -- or should be equal -- is foolhardy and creates mischief. Let's look at it.

After reading Dr. Thomas Sowell's latest book, "Intellectuals and Race," one cannot emerge with much respect for the reasoning powers of intellectuals, particularly academics, on matters of race. There's so much faulty logic and downright dishonesty

American education is in a sorry state of affairs, and there's enough blame for all participants to have their fair share. They include students who are hostile and alien to the education process, uninterested parents, teachers and administrators who either are incompetent or have been beaten down by the system, and politicians who've become handmaidens for teachers unions.

Let's work through an example. Suppose 100 yards of fence could be built using one of two techniques. You could hire three low-skilled workers for $15 each, or you could hire one high-skilled worker for $40. Either way, you get the same 100 yards of fence built. If you sought maximum profits, which production technique would you employ? I'm guessing that you'd hire one high-skilled worker and pay him $40 rather than hire three low-skilled workers for $15 each. Your labor costs would be $40 rather than $45.

In his State of the Union address, President Barack Obama proposed raising the minimum wage from $7.25 an hour to $9 an hour. That would be almost a 25 percent increase. Let's look at the president's proposal, but before doing so, let's ask some other economic questions.

Steven Spielberg's "Lincoln" has been a box-office hit and nominated for 12 Academy Awards, including best picture, best director and best actor for Daniel Day-Lewis, who portrayed our 16th president.

In his State of the Union address, President Barack Obama proposed raising the minimum wage from $7.25 an hour to $9 an hour. That would be almost a 25 percent increase. Let's look at the president's proposal, but before doing so, let's ask some other economic questions.

There's a story told about a Paris chief of police who was called to a department store to stop a burglary in progress. Upon his arrival, he reconnoitered the situation and ordered his men to surround the entrances of the building next door.

A senior Defense Department official said the ban on women in combat should be lifted because the military's goal is "to provide a level, gender-neutral playing field." I'd like to think the goal of the military should be to have the toughest, meanest fighting force possible. But let's look at "gender-neutral playing field."

Earlier this year, President Barack Obama warned that Social Security checks will be delayed if Congress fails to increase the government's borrowing authority by raising the debt ceiling. However, there's an issue with this warning.

Let's look at experts. Sir Isaac Newton (1642-1727) was a mathematician and scientist. Newton has to be the greatest and most influential scientist who has ever lived. He laid the foundation for classical mechanics, and his genius transformed our understanding of science, particularly in the areas of physics, mathematics and astronomy. What's not widely known is that Newton spent most of his waking hours on alchemy; his experiments included trying to turn lead into gold. Though he wrote volumes on alchemy, after his death Britain's Royal Society deemed that they were "not fit to be printed."

When I attended primary and secondary school -- during the 1940s and '50s -- one didn't hear of the kind of shooting mayhem that's become routine today. Why? It surely wasn't because of strict firearm laws. My replica of the 1902 Sears mail-order catalog shows 35 pages of firearm advertisements. People just sent in their money, and a firearm was shipped.