Food is becoming scarcer and more expensive on a worldwide scale, due to increased consumption in growing countries like China and India and rising fuel costs. That can-do solution to energy needs — turning corn into fuel — is sapping fields of plenty once devoted to crops that people need to eat. Shortages have sparked riots in countries dotting the globe. In the U.S., rice prices tripled and some stores rationed the staple.

Residents of the nation's capital and its suburbs repeatedly lose power for extended periods as mere thunderstorms — not earthquakes or terrorist bombings — rumble through. In California, leaders warn people to use less water in the unrelenting drought.

Want to get away from it all? The weak U.S. dollar makes travel abroad forbiddingly expensive. To add insult to injury, some airlines now charge to check luggage.

Want to escape on the couch? A writers' strike halted favorite TV shows for half a season. And that newspaper on the table may soon be a relic of the Internet age. Just as video stores are falling by the wayside as people get their movies online or in the mail.

But there's always sports, right?

The moorings seem to be coming loose here, too.

Barry Bonds and Roger Clemens stand accused of enhancing their heroics with drugs. Basketball referees are suspected of cheating.

Stay tuned for less than pristine tales from the drug-addled Tour de France and who knows what from the Summer Olympics.

It's not the first time Americans have felt a loss of control.

Alger, the dime-novel author whose heroes overcame adversity to gain riches and fame, played to similar anxieties when the U.S. was becoming an industrial society in the late 1800s.

American University historian Allan J. Lichtman notes that the U.S. has endured comparable periods and worse, including the economic stagflation and Iran hostage crisis of 1980; the dawn of the Cold War, the Korean War and the hysterical hunts for domestic Communists in the late 1940s and early 1950s; and the Depression of the 1930s.

"All those periods were followed by much more optimistic periods in which the American people had their confidence restored," he said. "Of course, that doesn't mean it will happen again."

Each period was also followed by a change in the party controlling the White House.

This period has seen intense interest in the presidential primaries, especially the Democrats' five-month duel between Obama and Hillary Rodham Clinton. Records were shattered by voters showing up at polling places, yearning for a voice in who will next guide the country as it confronts the uncontrollable.

Never mind that their views of their current leaders are near rock bottom, reflecting a frustration with Washington's inability to solve anything. President Bush barely gets the approval of three in 10 people, and it's even worse for the Democratic-led Congress.

Why the vulnerability? After all, this is the 21st century, not a more primitive past when little in life was assured. Surely people know how to fix problems now.

Maybe. And maybe this is what the 21st century will be about — a great unraveling of some things long taken for granted.