Lawsuit accused company of discharging hot water, which can dissolve oxygen and stress fish, as well as other aquatic wildlife and birds.

Loss of wetlands, changes in habitat hydrology from dams and agricultural tile drainage, viruses, and poaching put turtle population at risk.

Indian Liberty is accused of contaminating Illinois waterways, damaging private property and criminally disposing of waste. A Tribune investigation reveals how abandoned oil and gas wells have prolife...

Some companies that are still profiting from oil and gas production elsewhere have potentially shifted the cost of plugging these wells to the state and taxpayers.

A Tribune investigation reveals how Fireball evaded its legal responsibility, exposing communities to contaminants and saddling the state with millions in clean-up costs.

Likely escapees of the exotic pet trade, the birds first put down roots in some south suburbs in the 1960s and Hyde Park in the 1970s.

This green approach avoids the release of smoke from cremation and the leaking of fluids from burying embalmed bodies.

Unseasonably warm temps in Italy and a reduced snowpack will require 2 million cubic yards of artificial snow to ensure consistent conditions for athletes.

Abandoned oil and gas wells pose environmental and public health risks. For three decades, the state has mismanaged funds earmarked for minimizing the threat.

Abandoned oil and gas wells pose environmental and public health risks. For three decades, the state has mismanaged funds earmarked for minimizing the threat.

Abandoned oil and gas wells pose environmental and public health risks. For three decades, the state has mismanaged funds earmarked for minimizing the threat.

Citizens can help monitor the prairie and bison, and Native Americans can reconnect to their roots under a community science program.

In Chicago, fall is the second fastest-warming season after winter, and outliers, like this week’s cold, don’t lessen the impact of climate change, experts say.

In Chicago, fall is the second fastest-warming season after winter, and outliers, like this week’s cold, don’t lessen the impact of climate change, experts say.

New U.S. EPA rule would strip protections from 72% of the state’s remaining wetlands, which play a crucial role in mitigating flooding and filtering drinking water.

New U.S. EPA rule would strip protections from 72% of the state’s remaining wetlands, which play a crucial role in mitigating flooding and filtering drinking water.

New U.S. EPA rule would strip protections from 72% of the state’s remaining wetlands, which play a crucial role in mitigating flooding and filtering drinking water.

Turkeys make up approximately 2% of the entire U.S. poultry inventory, but account for 24% of new cases in commercial and backyard flocks.

After Hurricane Melissa’s exceptionally strong winds subsided, the roots of breadfruit trees clung deep into the fertile Jamaican soil — offering hope and a step toward food security in the f…

Dam-building beavers are known for changing their ecosystems; muskrats can substantially alter vegetation structure.

Dam-building beavers are known for changing their ecosystems; muskrats can substantially alter vegetation structure.

Videos shared on social media show man struggling on the ground while a federal agent keeps him in a headlock.

Videos shared on social media show man struggling on the ground while a federal agent keeps him in a headlock.

If immigrants entered the country illegally or are without granted status, attorneys say they have no protections under a second Trump administration.

The alleged shooting happened the same day a journalist was released after being detained by federal immigration agents while covering a protest outside the ICE facility Saturday.

Faith leaders are on the front lines with demonstrators, attending rallies and protests and providing safe spaces for immigrants.

The Lincoln Park Zoo brought the 91-year-old conservation activist back to the city this weekend, and her commitment remains as strong as ever.

An Elgin man who was born in Texas said he was handcuffed and placed in a U.S. Customs and Border Patrol vehicle, as part of the latest Chicago-area ICE blitz.

The Lincoln Park Zoo brought the 91-year-old conservation activist back to the city this weekend, and her commitment remains as strong as ever.

The region is not prepared for the unprecedented demand from data centers and other big users like agriculture.

Bystanders filmed federal immigration agents arresting the Leodegario Martinez Barradas last Sunday.

The pollutants that were pumped into the river, unregulated for decades, pose the biggest threat to its ecosystem.

The region is not prepared for the unprecedented demand from data centers and other big users like agriculture.

The region is not prepared for the unprecedented demand from data centers and other big users like agriculture.

Pollen has concentrated in the city over the past three weeks, mostly from ragweed. Wednesday counts were the highest recorded so far this year — the last time the area had so much ragweed was in 2…

The pollutants that were pumped into the river, unregulated for decades, pose the biggest threat to its ecosystem.

A $1.15 billion project at the Brandon Road Lock and Dam on the Des Plaines River in Joliet will target silver and bighead carp.