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Residents say Love Canal still toxic and unsafe

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News Wrap: Rick Gates takes the stand in Manafort case

News Wrap: Rick Gates takes the stand in Manafort case

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Scarcity and crisis drive Venezuelans to flee

Scarcity and crisis drive Venezuelans to flee

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Manafort defense attorneys go after Rick Gates’ credibility

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PBS News Hour

Challenges of determining if someone is too high to drive

As states across the country legalize marijuana, efforts to determine whether someone is too high to drive is becoming a thorny public health issue. From brain functioning analyses and phone apps to training police officers on looking for signs, Hari Sreenivasan reports from Massachusetts, the latest state to start opening marijuana dispensaries, on efforts to resolve the dilemma.
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