Few of history’s turning points can credit just one hero. Instead, there was an army of poeple who spread the word, or they stepped up and did it.

In Hurricane Katrina, hundreds of boat owners rescued people—single moms, toddlers, grandfathers—stranded in attics, on roofs, in flooded h...

“When every day seems the same, that is because people have stopped noticing the good things that appear in their lives.”

If people's physical lives were anywhere near as cluttered as their digital lives, their kitchen sinks would be full of dishes, their closets would be jammed, and their houses would be in chaos.

But our digital lives are limited to our devices, so we don't notice how messy they are. Our n...