Sahar, a 9-year-old African lion, arrived in Chicago in 2012 and became a favorite among staff and visitors. He died unexpectedly last month while living at a zoo in Kansas. 

With winter right around the corner, home gardeners should harvest whatever fruit and vegetables that remain in their garden as soon as possible. Organic gardener Jeanne Nolan shares tips to get your garden ready for the cold season. 

Colleen and Keith Begg founded an organization that helps maintain the wildlife in the Niassa National Reserve in Mozambique, one of the last remaining strongholds for lions in Africa. 

How did researchers reconstruct the face of an ancient human ancestor using a fossilized bone? This story and more from the world of science with Neil Shubin.

A group of 30 states and cities are taking legal action to defend the federal government’s authority to regulate emissions from coal-fired power plants. 

This week, a number of dead monarch butterflies were found along the lakefront. The sight alarmed some members of the public who spotted the insects. But one local expert says it’s par for the course as the butterflies retreat south for the winter.

Hundreds of bird species in North America are at risk of extinction from climate change, according to an alarming new report from the National Audubon Society.

Autumn is upon us, and soon Illinois will be awash in fall foliage. Here’s your guide to when – and where – you can spot those red, orange, yellow and purple leaves during their peak throughout the Land of Lincoln.

Earlier this year, for the first time ever a small team of scientists was able to forecast a severe tornado outbreak almost one month in advance. We speak with Victor Gensini, a key member of that team.

Activists on Monday evening closed down the streets in front of Chicago City Hall and the James R. Thompson Center as they called on Mayor Lori Lightfoot and Gov. J.B. Pritzker to declare a “climate emergency.”

Zoo staff had been working with Siku, a 9-year-old male polar bear, for about a year to train him on behaviors that helped staff collect his blood. 

An increasing number of veterans are pursuing careers in fast-growing environmental sectors, like solar and wind energy, says Jessica Klinge, who will lead the Illinois chapter of Green Veterans.

Over the past year, a term new to many Americans has entered the political lexicon: the Green New Deal. One early advocate was author Naomi Klein, who joins us to discuss her new book, “On Fire: The (Burning) Case for a Green New Deal.”

The polar bear has become the poster child for climate change, but increasing temperatures impact many forms of life – including insects. Dr. May Berenbaum weighs in on what that means for the rest of life on Earth. 

The SpaceX founder aims to create a fleet of reusable rockets that will make space travel dramatically cheaper and more accessible. But can he turn what has long been science fiction into science fact?

New “sensory stations” allow visitors to get a more intimate experience of the museum’s iconic dinosaur – including the stench of Sue’s post-meal breath.