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Courtroom sketch by Thomas Gianni shows Dennis Hastert standing with the aid of a walker while U.S. District Judge Thomas Durkin asks him questions about molestation.

In court, Dennis Hastert admitted to being a sexual abuser. We hear from some professionals who treat victims of sexual predators about detecting the signs of child sexual abuse.

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She's the co-founder and editor-in-chief of The Huffington Post and a syndicated columnist. Arianna Huffington talks about the wake-up call that led her to write her 15th book, "The Sleep Revolution."

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Lead levels in the water supply are getting nationwide attention after the ongoing crisis in Flint, Michigan came into the spotlight. Now, CPS says it will test for lead in the water at 28 schools, even though it's not legally required to.

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It’s time to start planting! The Organic Gardener Jeanne Nolan returns to WTTW's organic garden to plant cool-season crops selected by viewers and tackle an early flush of weeds. Also, we need your help picking the next round of crops to plant.

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(Steve Johnson / Flickr)

Mayor Rahm Emanuel announced Wednesday initiatives and services to reassure residents that Chicago's water is safe and lead-free.

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The Zika virus has been shown to cause microcephaly and other fetal brain abnormalities. We talk with a local woman, pregnant with her first child, who has been dealing with the terrifying possibility that she and her unborn child may have been exposed to the virus.

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Free summer workout classes, including yoga, return to Millennium Park in June. (Courtesy of the city of Chicago Department of Cultural Affairs and Special Events)

Fill up your water bottle, grab a yoga mat and head to Millennium Park, where free summer workout classes begin in June. Get the full schedule.

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A new report for consumers based on test results from the U.S. Department of Agriculture sheds light on the prevalence of pesticide residue in produce. Find out which fruits and vegetables had high levels, and which fared better.

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Medical professionals learn how to use the Sexual Assault Evidence Collection kit, which has several packets to collect evidence from a suspect and a patient of a sexual assault case. (Sgt. Rebecca Linder / Wikimedia Commons)

Delays in rape kit testing and strained law enforcement resources nationwide mean that victims of sexual assault may face long waits for their attackers to face prosecution. 

New Report Grades States PE Requirements, Policies

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(U.S. Navy photo by Senior Chief Mass Communication Specialist Gary Ward / Wikimedia Commons)

When it comes to physical education, a new report shows many states aren’t measuring up to national recommendations, including Illinois. Only Oregon and the District of Columbia meet national recommendations for weekly time in physical education at both the elementary and middle school levels, according to the report. 

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The disaster in Flint has spotlighted the dangers and adverse health outcomes of lead seeping into communities’ drinking water. Elizabeth Brackett reports on the lead pipes carrying water into Chicago and suburban homes. 

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Winter’s (mostly) behind us and we’re ready to grow! It might not quite feel like it yet, but spring is here and it’s time to head back to the garden. The Organic Gardener Jeanne Nolan joins us to prepare WTTW’s organic garden for a fruitful growing season.

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A groundbreaking study partially conducted at Lurie Children’s Hospital of Chicago found that a marijuana extract greatly reduced severe seizures in some children.

Cook County Not Even in Top 50

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DuPage County, which includes Warrenville Grove Forest Preserve, is the healthiest county in Illinois, according to a recent report.

DuPage County is the healthiest in the state, according to a recent comprehensive report comparing counties’ health statewide. Cook County doesn't crack the top 50.

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Rising rates of addiction to heroin and prescription drugs have been making headlines across the country. Find out what the latest science is telling us about the nature of addiction.

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Americans are constantly connected and staring at digital screens—be they cellphones, tablets, computers or TVs. Many times, multiple devices are being used at once. This constant exposure is taking a toll: more than half of Americans report feeling digital eyestrain—discomfort caused from the use of digital devices. When more than one device is used 75 percent report discomfort.