Science

From Canada To Latin America, The Christmas Bird Count Is On

Since 1900, citizen scientists across the Americas have braved bad weather and lack of sleep to participate in the yearly count — essentially, a bird-watching marathon. In the process, these birds have created the world's longest-running database in ornithology and given scientists a great tool for assessing the health of bird populations.

Don't Fear That Expired Food

When food passes its sell-by date, it's swept from the supermarket shelf. But that doesn't mean it's not safe to eat. Taste and smell are usually better indicators of a food's safety. And some items, like canned foods, can even last years or decades after their expiration date.

The Renaissance Man Who Got It All Wrong

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.