A team of researchers, led by Morton Arboretum, spent the better part of the past five years creating the first-ever standardized checklist and threat assessment of the nearly 900 species native U.S. trees. Their work provides the foundation on which to build awareness, advocacy and future conservation efforts.

The Chicago Park District is joining a national community science project designed to raise awareness of all the bees, butterflies, beetles, moths and wasps that rely on urban green spaces for food and shelter.

The Duchossois family — whose late patriarch, Richard Duchossois, purchased Arlington Park in 1983 — has announced the sale of its 246.5-acre Hill ‘N Dale Farm South property to Barrington-based Citizens for Conservation, ensuring the land’s protection as open space in perpetuity.

Zombie or doomed ice is ice that is still attached to thicker areas of ice, but is no longer getting fed by those larger glaciers. Meanwhile the doomed ice is melting from climate change, said study co-author William Colgan, a glaciologist at the Geological Survey of Denmark and Greenland.

The emergency waiver was granted Saturday for Indiana, Illinois, Michigan and Wisconsin, EPA Administrator Michael Regan said. In a letter to state officials, Regan said the agency determined the waiver is necessary “to minimize or prevent disruption of an adequate supply of gasoline to consumers.”

It’s the time of year when some of the tallest native plants are in bloom, coming into their own just as most other flora are on the wane. And by tall, we mean they could easily dunk on LeBron James.

The survey found that 11% of young adults reported using marijuana on a daily basis in 2021 and 43% had used it in the past year. About 8% of young adults reported using substances such as LSD, PCP and psychedelic mushrooms in the past year, up from just 3% in 2011.

The decision by the California Air Resources Board came two years after Gov. Gavin Newsom first directed regulators to consider such a policy. If the goal is reached, California would cut emissions from cars in half by 2040.

As part of a grassroots "depaving" movement, communities are ripping up strips of asphalt and concrete to make way for pocket parks, gardens and nature play spaces. The newly launched Depave Chicago is aiming for a spring 2023 pilot project.

The James Webb Space Telescope took the photos in July, capturing unprecedented views of Jupiter’s northern and southern lights, and swirling polar haze.

Illinois will soon be part of a cluster of states in an extreme heat belt. That’s according to a recent study that finds a quarter of land in the U.S. is at risk of the most extreme levels of heat exposure, that's temperatures exceeding a 125°F heat index.

As part of the Green Schools Project, schools engage in project-based challenges to develop and implement creative, low-cost, sustainable practices. Those schools receive resources and support from the Illinois Green Alliance to collaborate on a year-long project which they can present at the end of the school year.

A new study suggests ant colonies work like a collective brain to make decisions. How racial discrimination could negatively impact brain structure. A surgical implant that could provide pain relief without drugs. And how a quirk of evolution gave humans our voice.

Illinois officials are about to release a draft of the first comprehensive overhaul of the State Water Plan in 40 years, with climate change among the critical issues the document is set to address.

Chicago police and fire departments conducted multiple water rescues in a less than 24-hour period on Lake Michigan, with at least two people dead.

From Barcelona to Tel Aviv, scientists say they are witnessing exceptional temperature hikes ranging from 5.4 degrees Fahrenheit to 9 degrees Fahrenheit above the norm for this time of year. Water temperatures have regularly exceeded 86 degrees on some days.