A GPS collar allowed researchers to track the wolf from Michigan all the way to Manitoba, Canada. That's just one of the wild stories we followed this week.

Live trees — well, not so live anymore — can be recycled at any one of 26 citywide locations, Jan. 7-21.

Rescuing a bald eagle floating on ice in open water raises the stakes exponentially, but volunteers with Chicago Bird Collision Monitors proved up to the task with a New Year's Day recovery effort.

Enjoy a cosmic Christmas, with all five naked-eye planets visible in the sky. The moon, Mercury and Venus will form a sparkling triangle on Christmas Eve. 

From industrious sharks to the bird of the year, here’s what caught our attention this week on the climate and nature beat.

The snow total from Thursday was a mere 1.3 inches at O'Hare (though northwest Indiana and lower Michigan have been hammered with lake effect), but the real danger of this system was always the wind and cold, meteorologists said.

More than 1,800 flights have been canceled Thursday across the United States, according to the flight tracking site FlightAware, as severe winter weather complicates holiday travel.

The number of travelers expected to fly – 7.2 million – is just shy of 2019’s 7.3 million. And when you factor in that airlines are operating fewer flights that are more crowded, there’s serious potential for a serious mess for air travelers. How to cope? Here are some strategies.

Blizzard-like conditions are predicted just ahead of Christmas and during Hanukkah. The double whammy caused crowded parking lots and long aisles at grocery stores on Wednesday as folks stocked up.

Classes are not canceled Thursday, CPS CEO Pedro Martinez announced. Chicago is expecting to get hit with a dangerous combination of high winds, extremely cold temperatures and blowing snow, creating whiteout conditions.

Unless you live in a year-round warm climate and plan to stay there, it’s important to know how winter storms behave, how to avoid and prepare for them, and heaven forbid, what to do in the worst-case scenario.

The fund will award grants in amounts ranging from $50,000 to $250,000 for projects, including energy efficiency upgrades, green infrastructure or the purchase of electric vehicles.

What will be the hallmark of the impending Christmas blizzard of 2022? Probably not a lot of snow, but that’s not what blizzards are about anyway.

The National Museum of Puerto Rican Arts and Culture leases a historic landmark building in Humboldt Park. It began construction on an adjacent archive facility without obtaining permits.

Openlands is hoping to find more Latino and Spanish-speaking volunteers to lead the Birds in My Neighborhood program, which educates kids on native birds through in-school lessons and field trips.

Lake County Forest Preserves has now joined a global wildlife tracking network, expanding the ability of researchers to follow the movement of migratory birds through the Chicago region.