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Field Museum ichthyologist Susan Mochel talks with visitors at the museum's ID Day in 2017. (Courtesy Field Museum)

More scientists will be on hand next month to examine specimens and artifacts brought in by visitors, including staff specializing in zoology, paleontology, geology, ichthyology (also known as fish science) and more.

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(Courtesy Shedd Aquarium)

She is Shedd’s only full-time photographer, capturing images of the aquarium’s 32,000 animals from both in and out of the water. A conversation with Brenna Hernandez.

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We bite into the science behind this summer’s blockbuster movie about the giant, prehistoric shark Megalodon with a Shedd Aquarium expert.

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Rusty, an agriculture detection dog, sits next to contraband found on July 24, 2018 at an Air France cargo warehouse at O’Hare International Airport. (Courtesy U.S. Customs and Border Protection)

The opioid crisis in the United States is being fought on many fronts. And one is at O’Hare airport. Meet some of the best four-legged customs enforcers in the world.

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Ivory seized Feb. 2, 2018 from poachers convicted of killing 11 elephants in and around Nouabale-Ndoki National Park in the Republic of Congo. (Z. Labuschagne / Wildlife Conservation Society)

As part of a growing movement to undermine the bloody practice of elephant and rhino poaching, Illinois has become the ninth state to ban the sale of ivory and rhino horn.

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(Free-Photos / Pixabay)

A recently passed revision to Illinois’ Humane Care for Animals Act clarifies the right of police to take custody of dogs or cats suffering from extreme heat, cold or other life-threatening conditions. 

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(Courtesy Lincoln Park Zoo)

A groundbreaking program to study urban wildlife using a network of motion-triggered cameras is expanding to Canada and South Africa. 

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Silver carp jumping into a boat. (Evan Garcia / Chicago Tonight)

Each year, self-proclaimed “rednecks” try to rid the Illinois River of Asian carp – one flying fish at a time. We visit the small town of Bath for a look.

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(Anne Brooke / U.S. Fish and Wildlife Service)

As part of a relatively new Lincoln Park Zoo project, guano from bats across the Chicago area is collected and tested for levels of cortisol, an indicator of stress. 

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(Jim Schulz / Chicago Zoological Society)

A porcupette, or baby porcupine, was born last month at Brookfield Zoo and is being hand-reared by the zoo’s animal care and veterinary staff. 

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(Pxhere.com)

Chicago purports to be a dog-friendly city, but when it comes to dog parks, there is a huge discrepancy between the city’s North and South sides. What one dog-lover is doing to change that.

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(Courtesy Friends of the Chicago River)

The structures, which look like doghouses without doors or windows, rest atop 12-foot stilts and can accommodate as many as 2,000 bats. Is this the year the bats will move in?

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The Dorothy Bradley Atkins Medicinal Plant Garden (Kristen Thometz / Chicago Tonight)

More than 200 medicinal plants grow in a garden on the city’s Near West Side, including species that have led to the development of treatments for cancer and congestive heart failure.

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Four-week-old kittens are fed at Chicago Animal Care and Control (Alex Ruppenthal / Chicago Tonight)

Residents who come across young animals in the city often think they’ve been abandoned. But that’s rarely the case. Learn how to respond when you spot kittens or other baby animals on your block. 

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Chicago residents logged more than 50,000 complaints last year about rats, according to a new survey that ranks the city as the “rat capital” of the U.S. We separate rat fact from fiction.

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A waterfall at River Park in Chicago. (Courtesy One City Films)

Chicago is losing its last waterfall. We follow up on an earlier story to see the beginning of its demolition in River Park.

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