For the next few months, Katrina Quint has one request for visitors to the Lincoln Park Zoo: Look up. Across from the white-cheeked gibbon enclosure sits a great, sprawling bur oak tree, about 45 feet ...

CHICAGO (CBS)-- It was there long, long before new lion cubs Pesho, Sidai, and Lomelok made their recent debut. It was there when Otto the Gorilla escaped in 1982 – and before he was the subject of a ...

The bur oak (Quercus macrocarpa) is a noble native tree. This oak has large (5- to 9-inch-long), dark-green leaves. The base fiddle-shaped leaves have deep, rounded sinuses. The acorns are most ...

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A massive bur oak that had lived through hundreds of years of storms, droughts and human development finally succumbed to Friday’s powerful winds. The “famous” tree, off Harrodsburg Road near Military ...

Plano's bur oak tree in Bob Woodruff Park South is estimated to be more than 400 years old. The tree has received special treatment and pruning to help keep it thriving. Photo courtesy of city of ...

Q: I have a bur oak tree in our backyard that’s 9 years old. Last summer, I started noticing ridges on the tree trunk and branches. Is this normal? If not, is there anything I can do about it? — Heidi ...