Estimates suggest that Argentavis had a wingspan of up to 7 meters (23 feet) and weighed around 70 kilograms (154 pounds)—making it the largest flying bird to ever exist. Scientists believe it ...

Scientists have identified bones of the largest flying bird ever found -- an ancient soaring seabird with a wing span of at least 21 feet. Daniel Ksepka, curator of science at the Bruce Museum ...

An curved arrow pointing right. There's a new documentary about Carroll Spinney, the puppeteer who played Big Bird ever since the character debuted on "Sesame Street" in 1969. The film ...

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