The largest snowflake ever observed in the world supposedly appeared 125 years ago today in Fort Keogh, Montana. A Google Doodle today prominently features a giant snowflake and leads searchers to discover more about this Guinness World record.

Driverless cars could double the efficiency of working parents, reduce parking costs and state licensing revenue, and take millions of drunk drivers off the road each year, according to a new infographic from Aptus Insurance.

Marketers are learning to use QR codes and other action codes more effectively. A new study of all 2011 issues of the top 100 U.S. magazines. It found that advertising drove the 439 percent increase in action codes from January through December.

Twitter has acquired security startup Dasient, which describes itself as an anti-malware vendor for large enterprises in the financial services, media, and online sectors. Its technology will be housed within Twitter's revenue engineering team.

After a slowdown in the fall of 2011, the share of adults who owned tablet computers or e-readers nearly doubled over the holidays, according to a new report from the Pew Internet and American Life Project. 19 percent of U.S. adults now own tablets.