The weekend is a great time to catch up on some of the reading you skipped during the week.  We hope you enjoy this set of long-form links.

Investing

Warren Buffett’s three investment styles.  (Can Turtles Fly?)

Jeremy Grantham on the next ten years of market returns.  (GMO)

How much diversification is too much?  (Musings on Markets)

Can hedge funds still add value?  (Credit Writedowns)

The investor’s guide to smart media.  (Attain Capital)

Finance

Who is going to buy all the equity the global economy needs to issue?  (McKinsey)

Three cases of financial disaster that highlight the problem with modern business.  (London Review of Books)

Why we need strong banks.  (Falkenblog)

The rise and fall of Jon Corzine.  (Newsweek)

Science

Freeman Dyson on the “cognitive illusions” covered by Daniel Kahneman’s Thinking Fast and Slow.  (New York Review of Books)

The downsides of being left-handed.  (WSJ)

How to build a better electric grid.  (earth2tech)

What really happened aboard Air France 447.  (Popular Mechanics)

Medicine

Why the medical establishment looks down on fecal transplants as a therapy.  (Superbug)

How doctors die.  (Zocalo via @KidDynamite)

Policy

The “Chicago Way” has lost its way.  (New Geography)

Simon Schama on why America should care about Europe.  (Newsweek)

Why are oil riches so often a curse?  (Project Syndicate)

Why has inequality been growing?  (Slate)

Society

Salman Khan is engineering a better model of education.  (Inside Higher Ed)

Welcome to the age of overparenting.  (Boston)

On the impracticality of the cheeseburger.  (Waldo Jaquith)

Culture

Why does America’s cultural landscape seem stuck in place?  (Vanity Fair)

The best books of 2011.  (Slate)

Sports

What the rise of Tim Tebow tells us about the intersection of sport and religion.  (WSJ)

Do the economics of Moneyball still apply?  (Grantland)

Thanks for checking in with Abnormal Returns. You can follow us on StockTwits and Twitter.