Why Even Almighty Google Couldn't Keep Track of the Flu

The flu, as many are unfortunately aware, hit especially hard this year, and Google's Flu Trends map only confirmed and then heightened our mucus-coated fears. Or so we thought. As Nature points out, a comparison between Google Flu Trends (which bases its map off flu-related searches) and traditional surveillance data… »2/13/13 5:20pm2/13/13 5:20pm