Francesca Paris
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Francesca Paris

University of Pittsburgh researchers developed a prototype device that can measure the amount of THC in a person's breath. Courtesy of the University of Pittsburgh hide caption

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Courtesy of the University of Pittsburgh

Scientists Unveil Weed Breathalyzer, Launching Debate Over Next Steps

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Even birds who are accustomed to urban noises can be spooked by the boom of fireworks, take off and crash into trees, cars and buildings. Craig Ruttle/AP hide caption

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Craig Ruttle/AP

This 4th Of July, Think Of Your Feathered Friends As You Plan For Fireworks

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Above, an elevated view of start-ups in the Collective Temperance Hospital in London in 2016. Lionel Derimais/Corbis via Getty Images hide caption

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Lionel Derimais/Corbis via Getty Images

The Decelerator: How Do You Shut Down A Startup?

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Rachel Held Evans amassed a loyal following over more than a decade of reflecting on faith issues. An Episcopalian, she was a popular and sometimes divisive figure among evangelicals. She died on Saturday. Daniel Evans via Chaffee Management hide caption

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Daniel Evans via Chaffee Management

Rachel Held Evans, Christian Writer Who Questioned Evangelical Beliefs, Dies At 37

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Author and historian Ron Chernow speaks at the annual White House Correspondents' Association dinner in Washington, D.C., on Saturday. James Lawler Duggan/Reuters hide caption

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James Lawler Duggan/Reuters

A Brooklyn judge on Thursday upheld a mandatory measles vaccinations order. On the same day, the United Talmudical Academy, pictured here, reopened after being closed for failing to comply with a Health Department order that required it to provide medical and attendance records amid a measles outbreak. Seth Wenig/AP hide caption

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Seth Wenig/AP

Rod Williams, a Purdue University associate professor, holds a hellbender that he and a team of students collected in southern Indiana's Blue River in 2014. The Eastern hellbender salamander is set to be Pennsylvania's official state amphibian. Rick Callahan/AP hide caption

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Rick Callahan/AP

The Archdiocese of Los Angeles has agreed to pay $8 million to a teenager who was sexually abused by a teacher when she was 15 years old. Pictured here, the Cathedral of Our Lady of the Angels, the headquarters for the archdiocese, in 2013. Damian Dovarganes/AP hide caption

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Damian Dovarganes/AP

A nurse prepares the measles, mumps and rubella vaccine at the Rockland County Health Department in Haverstraw, N.Y., earlier this month. Johannes Eisele/AFP/Getty Images hide caption

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Johannes Eisele/AFP/Getty Images

New Zealand nurse Louisa Akavi, pictured here in an undated photo, was captured in Syria in 2013. Her name was kept secret until Sunday. International Committee of the Red Cross via AP hide caption

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International Committee of the Red Cross via AP

Starr, a female bald eagle, looks over her eaglets in a nest along the Mississippi River in April. She is raising the three eaglets along with her two male partners, Valor I and Valor II. Stewards of Upper Mississippi River Refuge via AP hide caption

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Stewards of Upper Mississippi River Refuge via AP

People look up at the damage caused to Notre Dame Cathedral on Tuesday in Paris. A fire broke out on Monday afternoon and quickly spread across the building, causing the famous spire to collapse. Dan Kitwood/Getty Images hide caption

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Dan Kitwood/Getty Images