Mauyak, a 38-year-old beluga whale, is already mother to 6-year-old Kimalu and is expected to give birth again this summer. 

Mother’s Day was extra special for Rollie, a western lowland gorilla at Lincoln Park Zoo who gave birth to a male last weekend. 

The new habitat will also bring a new pride of lions, with the zoo’s current group set to depart for a Kansas zoo in the coming weeks. 

If the discovery is confirmed, it would be the first evidence that black holes and neutron stars can pair up to form binary systems.

In a process known as egg candling, the aquarium’s animal care staff use a high-powered light to observe the inside of growing penguin eggs to determine whether they are fertile and monitor their development. 

The swollen Mississippi River and its tributaries were receding in many flood-ravaged communities on Monday, but concerns remained high because of the threat of heavy rain over the next few days.

Lincoln Park Zoo and DryHop Brewers are teaming up again in support of conservation. The new fruited sour beer will be made with a blueberry purée complimented by a lemon and citrus tartness, according to DryHop.

Ready for even more rain? A look at how local tunnels and reservoirs handled the wettest week in years – and what’s next.

Sometimes the best thing for a forest or prairie is to burn it. We spend a day with a Cook County burn crew.  

The cubs’ arrival – the first litter born at the zoo since 2010 – is a bright spot for one of the world’s most endangered wolf species.

Several hundred students ditched classes Friday for a march and rally downtown as part of the Youth Climate Strike, a global movement demanding action to address global warming.

Nearly 6 inches of rain has fallen in and around Chicago since last weekend, which in years past might have caused significant flooding in some neighborhoods. But that hasn’t happened, city officials said.

For Chicago pet owners, finding a lost dog or cat could now be just a few clicks away, thanks to an app built using facial recognition technology.

From brain mapping to climate modeling and beyond: the potential impact of a new supercomputer being developed in the Chicago area. 

It’s home to more than animals: More than 330 species of trees, shrubs and plants live on zoo grounds, including the historic canopy of oak trees whose roots predate the city’s founding.

The groundbreaking book “Birds of America” by painter and ornithologist John James Audubon features intricate watercolor paintings of nearly every bird on the continent. It’s now on display at the Field Museum.