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(Chicago Tonight)

Why aren't Chicagoans getting on the recycling bandwagon? What city officials are doing to reverse dropping participation rates.

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The animal welfare team at Brookfield Zoo tends to Zenda, a 10-year-old male lion who appeared to have a toothache. (Chicago Tonight)

What happens when a lion gets a toothache? Meet the large and dedicated team that cares for more than 3,000 animals at Brookfield Zoo. 

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Charles Darwin

More than 150 years after Charles Darwin published "On the Origin of Species," the man and his theories continue to generate controversy and debate. That academic battle plays out in a new book titled "Debating Darwin."

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(J.B. Spector / Museum of Science and Industry)

A new exhibit at the Museum of Science and Industry invites visitors to sail though time and explore the evolution of ship design. 

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Photo by Mike Zarnek: Supermoon. Taken from Glenview on Sunday 11/13/2016

November’s full moon will be no ordinary sight. From Sunday evening through early morning on Tuesday, stargazers will be treated to a radiant lunar spectacle that hasn’t occurred to this degree since 1948.

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(J.B. Spector / Museum of Science and Industry)

To get children and teens interested in science, technology and engineering careers, Chicago’s Museum of Science and Industry is planning a new program examining the world around us and the role of humans in it. 

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A map shows internet outages caused by the Oct. 21 DDoS attack. (Courtesy of DownDetector)

A massive cyberattack temporarily takes down major websites. Find out how hackers use household devices to wreak havoc online.

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Motorists will be without a single testing center within Chicago city limits starting Nov. 1.

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From service dogs to household companions, a new book looks inside the complex world of a dog’s nose.

Species Relative of Great White, Megalodon Sharks

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A newly identified species of shark, Megalolamna paradoxodon, lived about 20 million years ago and measured roughly 13 feet in length. (Kenshu Shimada / DePaul University)

About 20 million years ago, a 13-foot predator swam in warm, shallow seas across the globe. This extinct shark was recently discovered by an international team of researchers led by a DePaul University professor.

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A remarkable new app brings us face-to-face with the 1915 Chicago tragedy.

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The Field Museum’s Matt von Konrat says that more than 3 million plant specimens have yet to be digitally cataloged. "We still have a ton of undiscovered diversity locked away," he said. (Courtesy of the Field Museum)

It's home to an estimated 30 million objects from across the globe, but only about 25 percent of the Field Museum's collection has been cataloged in a digital database. Starting Thursday, volunteers can help grow that percentage.

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U of C Research Provided ‘Blueprint’ for Study

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Rob Gaunt from the University of Pittsburgh prepares Nathan Copeland, who was paralyzed in 2004, for a brain computer interface sensory test using a robotic arm. (UPMC / Pitt Health Sciences Media Relations)

A paralyzed man is able to experience the sense of touch through the use of a robotic arm controlled by his brain. The breakthrough was made possible, in part, by years of research by a University of Chicago professor.

Discovery Results in Creation of 2 New Genera

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The jawbone of a newly reclassified beardog fossil (Field Museum specimen no. PM423), left, is shown in comparison with the jawbone of a larger beardog (specimen No. P12029) that lived approximately 22 million years later. (© Susumu Tomiya / The Field Museum)

Thanks to an inquisitive Field Museum researcher, a nearly 40-million-year-old fossil housed at the institution has been identified as one of the earliest relatives of dogs, bears and foxes known as a beardog. 

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SpaceX's Falcon 9, left, and Blue Origin's New Shepard. (SpaceX / Flickr, Franke360 / Wikimedia)

Tech billionaire Elon Musk wants to create a colony on Mars. Assessing the challenges–and his chances of success.

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Northwestern University chemistry professor Sir Fraser Stoddart, left, raises his glass at a ceremony celebrating his Nobel Prize win. (Evan Garcia / Chicago Tonight)

Sir Fraser Stoddart was one of three scientists awarded the Nobel Prize in Chemistry on Wednesday for developing the world’s smallest machines.