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The Gray-Cloud house in 2017. (Courtesy of David Cloud)

A 162-year-old Chicago home rumored to have once been a stop on the Underground Railroad is now the site of an excavation. What archaeologists are hoping to unearth.

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(Courtesy Shedd Aquarium)

In what is an extremely rare occurrence, a male weedy sea dragons recently accepted an egg transfer from a female and is now carrying 46 fertile eggs on his tail.

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This computer-generated image depicts part of Mars at the boundary between darkness and daylight. (Credit: NASA/JPL-Caltech)

Later this month, the red planet will be just 35.8 million miles away – the brightest and closest it’s been to Earth since 2003.

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The foot from a 3.3 million-year-old child skeleton discovered in 2002 in Ethiopia by University of Chicago professor Zeresenay Alemseged. (Zeresenay Alemseged / University of Chicago)

New analysis of a child’s foot from an ancient fossil shows that human ancestors had adaptations that allowed them to climb trees, similar to their apelike cousins.

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Commander Colonel Frank Borman leads the way as he, Command Module Pilot Captain James A Lovell Jr., and Lunar Module Pilot Major William A. Anders head to the launch pad for humanity’s maiden voyage around the moon and its first aboard the Saturn V vehicle, developed by NASA’s Marshall Space Flight Center in Huntsville, Ala. (Image credit: NASA)

The Apollo 8 astronauts reunite in Chicago as a new book by local author Robert Kurson celebrates the historic first human flight to the moon.

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Northwestern's Paul CaraDonna studied the impact of increased temperatures on mason bees. (Jack Dykinga / Northwestern University)

Slight increases in temperature could lead to the extinction of bees in southwestern states in the near future, according to a new study from Northwestern University and the Chicago Botanic Garden.

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(Book Catalog / Flickr)

Facebook denied an advertisement by Elmurst-based Citizen Advocacy Center for an event on data privacy, flagging the ad as "political content."

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(Courtesy of React Mobile Sidekick)

Chicago will become the second city in the country requiring hotels to implement panic buttons.

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Chicago has seen 6 inches of rain in June, well above the historical average, according to data from the National Weather Service. (Chicago Tonight)

Chicago has seen 6 inches of rain in June, well above the historical average of about 2.5 inches, according to data from the National Weather Service.

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(Courtesy Northwestern University)

Guided by the camouflaging abilities of chameleons, two Northwestern chemistry professors have developed a tiny, color-changing laser that could improve visual displays in TVs and smartphones. 

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The patch designed by NASA for a Northwestern-led mission to study how space affects the physiology and metabolism of mice. (NASA / Northwestern University)

Nearly two dozen laboratory mice will be launched into orbit next week as part of a Northwestern-led research mission to learn more about the physiological effects of living in space. 

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NASA’s Curiosity rover has discovered ancient organic molecules on Mars, embedded within sedimentary rocks that are billions of years old. (Credit: NASA / GSFC)

A tantalizing discovery suggests that life could once have existed on Mars – and may still exist today. We get the latest on the red planet with Adler Planetarium astronomer Mark Hammergren.

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Cook County Fisheries biologists Jim Phillips and Steve Silic in the walleye hatchery.

Though not a terribly romantic process, walleye breeding at the Cook County Forest Preserve District produces thousands of young fish for county lakes. We take a closer look.

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(Jillian Braun / Lincoln Park Zoo)

When it comes to picking a place to live, many Chicago-area mice tend to be city dwellers rather than suburbanites, according to initial results from an ongoing study by Lincoln Park Zoo.

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(Courtesy The Field Museum)

A tiny black speck contained within fossilized resin turned out to be the remains of an insect so ancient that it lived among dinosaurs.

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(Basil Greber / University of Chicago)

A study of rock minerals from northern Canada provides evidence that the Earth might have supported life hundreds of millions of years earlier than thought, according to research led by UChicago scientists.