With fewer than 1,000 Bactrian camels estimated to be living in the wild, the species is classified as critically endangered. On May 9, a Bactrian camel calf was born in Chicago.

Granddad is an Australian lungfish believed to be a century old that arrived at the Shedd Aquarium 83 years ago. (Shedd Aquarium)

Granddad is believed to be the oldest fish in captivity at any public aquarium or zoo in the world. The Shedd estimates he’s at least a century old and that an “excess of 100 million visitors” have passed through the aquarium since his arrival.

Two Mexican gray wolf pups born at Brookfield Zoo last month were released into the Arizona wilderness as part of a carefully timed conservation effort. The species has been threatened by extinction for over half a century.

How local forest preserves are using fire to maintain the Chicago area's natural ecosystem, much like Native Americans did prior to European settlement.

The bison herd at Fermilab just got a little bigger: On Tuesday, the first bison calf of 2016 was born at the particle physics laboratory in suburban Batavia.

The giant corpse plant, a titan arum, is now in bloom. See what the plant looks like via the CBG's live stream, and find out about late hours for Tuesday night.

The Field Museum recently captured some unusual animal portraits with motion-activated cameras in the Peruvian Amazon rain forest.

U.S. Secretary of State John Kerry signs the Paris Agreement on April 22. (@JohnKerry / Twitter)

The terms of the historic global pact were agreed upon by 195 countries on Dec. 12, 2015, at the United Nations Climate Change Conference in Paris, but Friday – Earth Day – marks the first day of the yearlong signing period.

If all goes as planned, the Chicago Botanic Garden is about to get very stinky in the next few days. That’s because Sprout, a titan arum–also known as a corpse flower–is very close to blooming.

Less than half of the plant life found in the Chicago region is native to the area. As the Morton Arboretum's tree improvement specialist, it's Joe Rothleutner's job to make sure those native plants are protected.

A new interactive exhibit on climate change at the Peggy Notebaert Nature Museum addresses “the defining issue of our time,” says Steve Sullivan, senior curator of ecology at the museum. 

Maku the eastern black rhino is one of less than 1,000 such animals living on Earth due to decades of poaching. Today he turns 30.

This weekend's festive Chiditarod shopping cart race will raise thousands of dollars and pounds of food for the Greater Chicago Food Depository, but organizers this year are making special efforts to prevent teams from dressing in offensive costumes.

There's a new way to measure age that might prove helpful in assessing an individual's risk of developing cancer, according to a recent Northwestern University study. Learn about epigenetic age and how it can impact your health.

The Chicago River is far from America's cleanest waterway. But a few anglers are trying their luck as its ecosystem improves. Captain Tim Frey took us for a winter fishing trip on the river.

A 10-week-old sea otter pup rescued after a rough storm in California last month is recovering at her new home in Chicago.