Opinion: Unskilled Labor Is Good for You, Columbus Was a Redhead, the City Council’s “Affordable Housing” Coercion, etc.

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In today’s Opinion section....

Tyler Cowen and Daniel M. Rothschild: Hey, Don’t Bad-mouth Unskilled Immigrants
You don’t have to be a computer genius to be good for the U.S.

Catherine Price: M&M Math for Fat Kids
Candy-counting books are teaching our children to pack on the pounds.

Martin Dugard: Was Columbus Really Italian?
A DNA discovery could rewrite 500 years of history.

Niall Ferguson: The Cold Wars Are Coming
The U.S.-Soviet nuclear rivalry was scary enough. Now imagine a world with multiple atomic antagonists.

Editorials

Soft on Sleaze?
Lobby reform efforts on Capitol Hill are falling short.

Yes on Prop. 81
Why Californians should approve a bond to build more libraries.

Affordability Through Coercion
The City Council is wrong to address the housing crunch by restricting property rights.

And some selected commentary from the weekend you might have missed:

Jonathan Chait: Bankrupted by Voodoo Economics
While Republicans tax-cut and spend, research shows increases lead to reduced government.

Ross A. Baker: A Bull’s-eye on Pelosi
While Republicans tax-cut and spend, research shows increases lead to reduced government.

Joel Kotkin: Why Perth Is Booming
Cities with low taxes and big oil deposits are the new boomtowns.

Rep. Pete Hoekstra: Journalism vs. Security
Leaking classified information puts American lives at risk, says Republican congressman.