People look up at Christmas lights as crowds stroll around downtown Lisbon's Chiado neighborhood, Saturday evening, Dec. 23, 2023. (AP Photo / Armando Franca)

The growth rate for the United States in the past year was 0.53%, about half the worldwide figure. The U.S. added 1.7 million people and will have a population on New Year's Day of 335.8 million people.

Groot Industries operates a waste facility in West Chicago at 1995 Powis Road.
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West Chicago is currently home to the only waste transfer facility in DuPage County. Now a second one is looking to open and residents are pushing back. 

Scientists have revealed the true appearance of Otzi the iceman, whose mummified remains were discovered on 1991 in the Italian alps. (Andrea Solero / AFP / Getty Images)

Here are six mysteries about human history that scientists have cracked in 2023. Plus, one that still has researchers scratching their heads.

The 2023 Starved Rock ornament from the Illinois Conservation Foundation. (Provided)

Illinois nature lovers can bring the state’s most famous outdoor treasures indoors, with a new series of holiday ornaments featuring state parks.

(Pixabay)

In fact, Dec. 25 isn’t going to feel particularly wintry at all.

Trees awaiting planting as part of the Lawrence Avenue streetscape project in Lincoln Square, December 2023. (Patty Wetli / WTTW News)

Chicago has touted the tens of thousands of trees it’s planted in recent years. But the city’s volunteer TreeKeepers say too many saplings die for lack of a maintenance plan.

This bouquet, grown and arranged by Englewood-based Southside Blooms, is now part of the Field Museum’s permanent Economic Botany collection. (Patty Wetli / WTTW News)

“Our work is part of the sweep of human history. It’s very humbling,” said Quilen Blackwell, co-founder of Southside Blooms.

(WTTW News)

The submission deadline is Jan. 12. Six new names will be chosen for Chicago’s fleet of plows.

A 3.1 magnitude earthquake was reported in southern Illinois, roughly 100 miles south of Springfield. (U.S. Geological Survey)

This latest seismic activity was centered near the small town of Waltonville (population 432), roughly 110 miles south of Springfield.

Ambassador Rahm Emanuel and officials from IBM and Japanese universities announce a new quantum education and research program. (Credit: U.S. Embassy in Japan)
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The announcement of the “tri-lateral” agreement took place at the residence of the U.S. Ambassador to Japan and former Chicago Mayor Rahm Emanuel.

A Geminid meteor streaks across the sky. (Stephen Rahn / Flickr Creative Commons)

Clear skies, a new moon and relatively warm temperatures will make for a great opportunity to catch the peak of the Geminid meteor shower Thursday — even in Chicago.

Invasive carp seining operation in action. (Courtesy of Illinois Department of Natural Resources)

The Illinois Department of Natural Resources is reporting an intensive 10-day “harvest” operated that netted 750,000 pounds of invasive silver carp, pulled from the Illinois River near Starved Rock.

While large-scale nuclear facilities like the Byron Generating Station won’t be allowed under a new law signed by Gov. JB Pritzker on Dec. 8, 2023, smaller-scale modular reactors are authorized under the plan. (Andrew Campbell / Capitol News Illinois)
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The measure does not allow new large-scale power generation facilities like the six plants that are already operational in the state, but rather allows for new smaller-scale emergent technology.

(unkowgayle / Pixabay)

A team of researchers at the University of Illinois Chicago set out to explore what makes ice tick. Specifically, how does ice stick to surfaces?

(WTTW News)
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As reports surfaced Thursday that the Bears were exploring Soldier Field’s south parking lot as a potential site for a new stadium, opposition immediately mobilized.

Pup EL2306 is Shedd Aquarium’s newest charmer. The sea otter was rescued in Alaska at the end of October and arrived at Shedd in late November. (Brenna Hernandez / Shedd Aquarium)

Shedd is one of only 11 institutions in North America with the resources to give a rescued sea otter pup a home.