Joel Kotkin

The presence of 100 million more Americans by 2050 will reshape the nation's geography. Scores of new communities will have to be built to accommodate them, creating a massive demand for new housing, as well as industrial and commercial space.

This growth will include everything from the widespread "infilling" of once-desolate inner cities to the creation of new suburban and exurban towns to the resettling of the American heartland -- the vast, still sparsely populated regions that constitute the majority of the U.S. landmass.

An ongoing source of strength for the United States over the next 40 years will be its openness to immigration. Indeed, more than most of its chief global rivals, the U.S. will be reshaped and re-energized by an increasing racial and ethnic diversity.

These demographic changes will affect America's relations with the rest of the world. The United States likely will remain militarily pre-eminent, but the future United States will function as a unique "multiracial" superpower with deep familial and cultural ties to the rest of the world.

No Clear Majority

California is in trouble: Unemployment is over 13%, the state is broke and hundreds of thousands of people, many of them middle-class families, are streaming for the exits. But to some politicians, like Sen. Alan Lowenthal, the real challenge for California "progressives" is not to fix the economy but to reengineer the way people live.

To many observers, America's place in the world is almost certain to erode in the decades ahead. Yet if we look beyond the short-term hardship, there are many reasons to believe that America will remain ascendant well into the middle decades of this century.

And one important reason is people.

For more than one-third of a century Jerry Brown has proved one of the most interesting and original figures in American politics--and the 71-year-old former wunderkind might be back in office in 2010. If he indeed wins California's gubernatorial election, the results could range from somewhat positive to positively disastrous.

From health care reform and transportation to education to the environment, the Obama administration has--from the beginning--sought to expand the power of the central state. The president's newest initiative to wrest environment, wage and benefit concessions from private companies is the latest example. But this trend of centralizing power to the federal government puts the political future of the ruling party--as well as the very nature of our federal system--in jeopardy.

The rapid decline in public support for Democrats and President Obama represents one of the most breathtaking political collapses in modern times. Little over a year from a huge electoral triumph, President Obama’s level of support has dropped from around 65% to under 50%. The Democrats in Congress, who held as much as a 10% edge over the Republicans last spring, actually are losing a “generic” vote.

Many Republicans and conservatives may think this represents a confirmation of their values. Yet in reality, the Democratic meltdown has less to do with belated admiration for the GOP—their support as a party remains at historically low levels—than a question of a massive disconnect between the people in power and the large, middle-class majority.

In this era of tea-partying revolutionary-era dress-ups, one usually associates secessionism with the far right. But if things turn sour for the present majority in Washington, you should expect a whole new wave of separatism to emerge on the greenish left coast.

The evolving Greek fiscal tragedy represents more than an isolated case of a particularly poorly run government. It reflects a deeper and potentially irreversible malaise that threatens the entire European continent.

The issues at the heart of the Greek crisis--huge public debt, slow population growth, expansive welfare system and weakening economic fundamentals--extend to a wider range of European countries--most notably in weaker fringe nations like Portugal, Italy, Ireland, Greece and Spain (the so-called PIIGS). These problems also pervade many E.U. countries still outside the Eurozone in both the Baltics and the Balkans.

For much of the past decade, "declinism" – the notion that America is heading toward a deadly denouement – has largely been a philosophy of the left. But more recently, particularly in the wake of Barack Obama's election, conservatives have begun joining the chorus, albeit singing a somewhat different variation on the same tune.