Science & Technology

In A Man of Misconceptions: The Life of an Eccentric in an Age of Change, John Glassie writes of 17th-century Jesuit priest and scientist Athanasius Kircher, a renaissance man who studied magnetism, Mount Vesuvius, even the blood of plague victims. The only problem? His theories were often wrong.

Got milk? Ancient European farmers who made cheese thousands of years ago certainly had it. But at that time, they lacked a genetic mutation that would have allowed them to digest raw milk's dominant sugar, lactose, after childhood.

Today, however, 35 percent of the global population — mostly people with European ancestry — can digest lactose in adulthood without a hitch.

Once upon a time, there was one screen that TV broadcasters needed to fill. These days, it's all about the two-screen experience.

People have been watching television with their laptops, smartphones and tablets in hand for a while now. But this year, big business tried harder than ever to bring television to a second screen.

For the Druids, mistletoe was sacred. For us, it's a cute ornament and maybe an excuse to steal a kiss. And of course it's a Christmas tradition.

But for a forest, mistletoe might be much more important. It's a parasite, shows up on tree branches and looks like an out-of-place evergreen bush hanging in the air.

Who hasn't turned a camera around at arm's length to snap a picture to send to friends or family? It always seems like it takes a few tries to frame the shot just right to capture both you and that awesome mountain summit behind you.

In the aftermath of Christmas, a parent could be forgiven for thinking that materialism has trumped human kindness.

Take heart. Children can easily become kinder and more helpful. And that behavior makes them more positive, more accepting and more popular.

At least that's how it worked for fourth- and fifth-graders in Vancouver, Canada. Researchers there have been studying empathy and altruism in schoolchildren for decades.

2012 has been a strange year for content creators — authors, producers, musicians. It was a year when the very idea of physical ownership of a book or CD or even a song file became almost passe.

It was also the year in which music-streaming services like Spotify and Pandora launched major efforts to convince people to pay for something they didn't own. But it's been slow going.

Music-streaming services have been trying to win over two types of customers: a younger generation that doesn't buy at all and an older generation that still likes owning physical albums.