How we feel about the evolving future tells us who we are as individuals and as a civilization: Do we search for stasis-a regulated, engineered world? Or do we embrace dynamism-a world of constant creation, discovery, and competition?

Kidney disease is a low-profile, unglamorous problem, a disease that disproportionately strikes minorities and the poor. Its celebrity spokesman is blue-collar comedian George Lopez, who received a kidney from his wife.

How we feel about the evolving future tells us who we are as individuals and as a civilization: Do we search for stasis-a regulated, engineered world? Or do we embrace dynamism-a world of constant creation, discovery, and competition?

Progress through trial and error depends not only on making trials, but on recognizing errors.

The glamour of air travel - its aspirational meaning in the public imagination - disappeared before its luxury did, dissipating as flying gradually became commonplace.

The mobile middle class gravitates to the cities where housing is affordable.

Medicare is immune from the competitive pressures that force private insurers to pay attention to what patients and doctors want.