Shedd Aquarium researchers are eagerly anticipating the spring migration of sucker fish, a species that could tell us about climate change.

During the fall and spring equinoxes, the sun rises due east and sets due west, creating an effect dubbed Chicagohenge (in reference to Stonehenge), when sunset is strikingly framed by the city’s east-west streets.

The second annual event offers simple ways to conserve water in advance of World Water Day.

The plan, which was approved by the City Council in November, has drawn outrage from residents and organizations who say the cost of metered parking will limit access to the lakefront. A petition against the meters has gathered thousands of signatures.

The ongoing battle to legitimize native gardens in Chicago is about to go another round, with the introduction of an ordinance to establish a native garden registry. But gardeners want to know why they’re bearing the burden of erroneous weed law enforcement.

The soaring price of Bitcoin has many environmentalists concerned. University of Chicago paleontologist Neil Shubin has more on that and other science stories making headlines around the world.

Wearing a mask. Staying home. Getting the vaccine. These are the methods that are likely top of mind when it comes to preventing the spread of the coronavirus. But there’s another tool too — and it’s in the air.

Is birding a sport? That’s up for debate even within the birding community, but you can’t say the activity isn’t competitive. There’s not one, but two March Madness-style tournaments involving birds underway.

A system carrying moisture from the Gulf of Mexico will hit the area late Monday morning through early afternoon, bringing with it rain, sleet, freezing rain and snow.

Snow through central portions of the US is expected to ramp up Saturday, but likely won’t reach its peak until Sunday. Flood alerts are also a big concern for this system in the Midwest. With some rivers nearing flood stage, the anticipated heavy rain could take the rivers to dangerous levels.

The National Audubon Society, along with partners, established the first Lights Out program in 1999 in Chicago. Philadelphia joins 33 other cities including New York, Boston, Atlanta and Washington, D.C.

The annual shift to daylight saving time happens this weekend, with clocks jumping forward an hour at 2 a.m. Sunday. While loads of digital devices make the switch automatically, the process of resetting biological clocks is still a chore.

An American woodcock, one of the earliest migratory arrivals in Chicago, is recovering from a head wound and broken clavicle after colliding with a building in Chicago.

Batten down the hatches, or at least secure lightweight objects outdoors. There’s a wind advisory in effect Wednesday.

Tuesday’s weather was one for the record books, with the mercury at O’Hare hitting 69 degrees, tying the highest temperature for March 9 set back in 1974, according to the National Weather Service. 

The legal wrangling over the Obama Presidential Center’s construction in Jackson Park is far from over, opponents say. Meanwhile, the Obama Foundation has just revealed a new architectural detail about the center’s tower.