If last week’s gas giveaway is any indication, people can expect to be idling in their cars for upwards of an hour or more Thursday as they wait their turn at the pump for Willie Wilson’s $1 million giveaway. 

The measure ratifies decisions made by Treasurer Melissa Conyears Ervin after her 2019 election to stop new investments in oil and gas firms while moving $70 million in investments from 225 fossil fuel companies. 

Equinoxes are always extra special in Chicago, thanks to the city’s grid. The sun rises due east and sets due west on the equinox, creating a phenomenon known as “Chicagohenge“ (in reference to Stonehenge), when the sun is strikingly framed by the city’s skyscrapers. The official start of astronomical spring takes place Sunday at 10:33 a.m.

Even with officials from several government entities keeping watch, someone dumped dye into the North Branch of the Chicago River, turning it bright St. Patrick's Day green over the weekend.

Robyn Detterline’s March Chicago Collision Bird Migration Madness tournament may be a product of her own imagination, but the stakes are very real for birds when it comes to navigating their way safely through Chicago.

Climate scientists at the University of Michigan looked at 15 different plant pollens in the United States and used computer simulations to calculate how much worse allergy season will likely get by the year 2100. It’s enough to make allergy sufferers even more red-eyed.

In recent years, educators have made extra efforts to encourage children to explore science, technology, engineering and mathematics fields. Especially girls. To help with this, the local nonprofit Girls 4 Science is offering a free program called Saturday STEM Academy for girls ages 10 to 18.

States that contribute to ground-level ozone, or smog, are required to submit plans ensuring that coal-fired power plants and other industrial sites don’t add significantly to air pollution in other states. 

Congress recently held a hearing on whether the U.S. should continue shifting back and forth between daylight saving and standard time. Guess what? We’re still springing forward Sunday.

Dyeing the Chicago River green on St. Patrick’s Day has been a tradition since the 1960s. But in 2020 and 2021, rogues extended the practice to a section of the North Branch, a bridge too far for environmentalists.

The weekend will kick off with subzero wind chills Friday night into Saturday morning, before milder temperatures move in Sunday, forecasters said.

Skunk cabbage is one of the first native plants to emerge from the frozen winter ground in the Chicago area. Its powerful aroma isn’t the only quirky thing about this plant.

The overall number of trees in the region has increased, according to a 2020 tree census conducted by Morton Arboretum.  But not all trees are seen as equals. Some are invasive and prevent native trees and plants from flourishing. 

DuSable Park has been a park in name only since Mayor Harold Washington dedicated the site, at the confluence of the Chicago River and Lake Michigan, in 1987. Wednesday, a design team was selected to bring the vision to life.

The Chicago Bears are teaming up with the Lake County Forest Preserves to remove invasive buckthorn from the property surrounding Halas Hall in Lake Forest.

Back in the 1980s, the number of fish species found in the Chicago River could be counted on a single hand. Today, that number is up to 60 species, an increase in diversity that can be directly attributed to a decrease in wastewater pollutants, according to a new study from the Shedd Aquarium.