A bottlenose dolphin born recently at Brookfield Zoo Chicago died late Wednesday. The zoo said it was performing an animal autopsy to determine the cause of death.

A baby dolphin born live on camera at Brookfield Zoo has died just days after footage of the birth went viral, the zoo announced Thursday.

A bottlenose dolphin calf born at the Brookfield Zoo last week has abruptly died, officials confirmed Thursday. According ...

In 1907, Illinois schoolchildren voted to select the state tree and the state flower. They selected the Native Oak. In 1973, a special poll of 900,000 schoolchildren changed the State Tree from the ...