Eugene Volokh, a professor at the University of California, Los Angeles, law school, said that if Mr. Zuckerberg sued and was declared a public figure, he would then ”have to show that the filmmakers knew the statements were false, or were reckless about the possibility of falsehood.” (via nytimes.com)

Got milk? If you do, take a moment to ponder the true oddness of being able to drink milk after you’re a baby. No other species but humans can. And most humans can’t either.

Part sport, part art, GPS drawing lets runners, walkers, cyclists and hikers imagine themselves anew, mapping their track lines across cities, roads and farms, and sharing them online.

This fall, Philadelphia’s skateboarders, bicyclists and inline skaters will have to either pocket their cell phones or use hands-free devices, making the city the first in the nation to extend the measure to include non-motorists.