Their recovery has been a national concern for decades. What’s happening locally in the effort to save the Mexican wolf.

Orangutans are one of humankind’s closest cousins. We meet a baby orangutan as she takes a trip to the doctor.

The ouster last weekend of Chicago Animal Care and Control’s executive director, whose short tenure resulted in the fewest instances of euthanasia at the agency since that data has been recorded, has got folks howling across the city.

With summer heating up, Chicagoans can visit these air-conditioned facilities to catch a break from the heat. 

Slight increases in temperature could lead to the extinction of bees in southwestern states in the near future, according to a new study from Northwestern University and the Chicago Botanic Garden.

Facebook denied an advertisement by Elmurst-based Citizen Advocacy Center for an event on data privacy, flagging the ad as "political content."

Shedd Aquarium is rolling out several new outdoor programs this summer aimed at bringing Chicagoans closer to local waters and aquatic life.

Chicago will become the second city in the country requiring hotels to implement panic buttons.

Nearly three years after becoming the first corpse flower to bloom at the Chicago Botanic Garden, Alice the Amorphophallus is on the verge of blooming again.

Chicago has seen 6 inches of rain in June, well above the historical average of about 2.5 inches, according to data from the National Weather Service.

Guided by the camouflaging abilities of chameleons, two Northwestern chemistry professors have developed a tiny, color-changing laser that could improve visual displays in TVs and smartphones. 

Nearly two dozen laboratory mice will be launched into orbit next week as part of a Northwestern-led research mission to learn more about the physiological effects of living in space. 

A tantalizing discovery suggests that life could once have existed on Mars – and may still exist today. We get the latest on the red planet with Adler Planetarium astronomer Mark Hammergren.

A new program aims to create or preserve nearly 2 million acres of habitat across the U.S. for monarch butterflies, which could face extinction in 20 years. 

Though not a terribly romantic process, walleye breeding at the Cook County Forest Preserve District produces thousands of young fish for county lakes. We take a closer look.

Brookfield Zoo welcomed two newborn Amur leopards in April. The male cubs are scheduled to make their public debut in mid-July.