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.

Sahar, a 9-year-old African lion, died last week while living temporarily at Rolling Hills Zoo in Kansas as Lincoln Park Zoo renovates its lion house. 

Experts say proposed changes to the Endangered Species Act could harm a number of troubled species found in Illinois, including the piping plover shorebird, rusty patched bumblebee and other animals and plants. 

By examining 51 crocodile skulls, Field Museum scientist Caleb McMahan was able to identify a previously unclassified species native to New Guinea. 

Illinois experienced more than 1,500 flood events from 2000 to 2018 – an average of 1.5 floods per week – resulting in $3 billion in property damages, according to a new report from the American Geophysical Union.

How does scientific discovery happen? And what goes right when the process works? Those are some of the questions behind a newly launched center at Northwestern University’s Kellogg School of Management.