Nearly 200,000 people downloaded an app, Cicada Safari, created by researchers to track observations of Brood X. Scientists will be reaping the rewards of that communal effort for years to come.

If crack-of-dawn birding isn’t your thing, maybe give under-the-cover-of-darkness moth-watching a try this weekend at Indian Ridge Marsh. 

The city has been testing alternatives to open-trench digging and tree removal during pipe replacement and repair projects. Failure of one new technique spelled the end of the line for a slew of trees in Chicago’s Andersonville neighborhood.

From starting a fire to pitching a tent, some Chicago teens are learning what it takes to camp in the great outdoors. We visit the Lincoln Park neighborhood to learn more about the program.

Half a dozen or more tornadoes touched down in the Chicago suburbs Monday, with more severe storms possible in the next few days. Those come as hot and humid conditions have prompted extreme heat warnings — and on the heels of a stark new report on climate change.

The annual Perseid meteor shower will hit its peak in the coming days, and may even put on its best display in years thanks to diminished competition from a waxing crescent moon. Here’s what you need to know.

A highly anticipated report from the Intergovernmental Panel on Climate Change states in the plainest terms yet that the window of opportunity to avert disaster is narrow, and closing.

Reports of sick and dying birds have tapered off since first coming to light in late spring. Illinois was not affected and wildlife officials reiterated that it's OK to have bird feeders and baths in outdoor spaces — just be sure to keep them clean. 

Three years in the making, the Douglass 18, a bird-themed mini-golf course, opens Saturday in Douglass Park. Neighborhood teens researched and designed the holes, drawing inspiration from Chicago’s bird population.

For many of us, social media is a convenient way to keep in touch with family, friends and colleagues. But sharing false information on platforms like Facebook during a global pandemic can have life or death consequences.

As the world staggers through another summer of extreme weather, experts are noticing something different: 2021’s onslaught is hitting harder and in places that have been spared global warming’s wrath in the past. 

Nearly 600 million birds are killed annually in North America due to collisions with buildings. A new Illinois law mandates bird-friendly design for state buildings.

The industrial history of Chicago’s Southeast Side has drawn criticism for its impact on the environment and residents’ health. Some say it also makes it difficult for residents to get around by foot or bike. How one South Deering program is working to change that.

Each year, 22 million pounds of plastic finds its way into the Great Lakes – the source of potable water for more than 30 million Americans. We take a look at what can be done to limit plastic pollution.

The newest members of Chicago’s growing piping plover family have names. Meet Siewka (pronounced Shivka), which is the Polish word for “plover,” and Imani, the word for “faith” in Swahili. 

Black and Latino neighborhoods in Chicago are more likely to be burdened by industries that pollute the air, ground and water, making environmental justice an important part of the equation as the country moves forward.