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Thousands participate in the National March for Science in Philadelphia, PA, on Earth Day, April 22, 2017. Similar events are held around th...

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22 April 2017


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National March for Science in Philadelphia

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22 April 2017

Thousands participate in the National March for Science in Philadelphia, PA, on Earth Day, April 22, 2017. Similar events are held around th...

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22 April 2017


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National March for Science in Philadelphia

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22 April 2017

Thousands participate in the National March for Science in Philadelphia, PA, on Earth Day, April 22, 2017. Similar events are held around th...

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22 April 2017


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National March for Science in Philadelphia

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22 April 2017

Protestor holds up a sign opposing conservative standpoints of the Trump-Administration regarding science and the environment. Thousands par...

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22 April 2017


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National March for Science in Philadelphia

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22 April 2017

Protestor holds up a sign opposing conservative standpoints of the Trump-Administration regarding science and the environment. Thousands par...

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22 April 2017


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National March for Science in Philadelphia

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22 April 2017

Protestors hold up signs opposing conservative standpoints of the Trump-Administration regarding science and the environment. Thousands part...

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22 April 2017


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National March for Science in Philadelphia

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22 April 2017

Protestors hold up signs opposing conservative standpoints of the Trump-Administration regarding science and the environment. Thousands part...

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22 April 2017


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National March for Science in Philadelphia

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22 April 2017

Protestors hold up signs opposing conservative standpoints of the Trump-Administration regarding science and the environment. Thousands part...

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22 April 2017


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National March for Science in Philadelphia

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22 April 2017

Thousands participate in the National March for Science in Philadelphia, PA, on Earth Day, April 22, 2017. Similar events are held around th...

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22 April 2017


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National March for Science in Philadelphia

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22 April 2017

Pela Levin-Dorko, 8, of Philadelphia, shows a model of a Oxytocin molecule as he participates with his family in the National March for Scie...

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22 April 2017


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National March for Science in Philadelphia

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22 April 2017

Protestor holds up a sign opposing conservative standpoints of the Trump-Administration regarding science and the environment. Thousands par...

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22 April 2017


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National March for Science in Philadelphia

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22 April 2017

Thousands participate in the National March for Science in Philadelphia, PA, on Earth Day, April 22, 2017. Similar events are held around th...

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22 April 2017


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National March for Science in Philadelphia

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22 April 2017

Thousands participate in the National March for Science in Philadelphia, PA, on Earth Day, April 22, 2017. Similar events are held around th...

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22 April 2017


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National March for Science in Philadelphia

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22 April 2017

Thousands participate in the National March for Science in Philadelphia, PA, on Earth Day, April 22, 2017. Similar events are held around th...

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22 April 2017


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National March for Science in Philadelphia

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22 April 2017

Thousands participate in the National March for Science in Philadelphia, PA, on Earth Day, April 22, 2017. Similar events are held around th...

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22 April 2017


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National March for Science in Philadelphia

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22 April 2017

One person is seen carrying a Trump flag, during the National March for Science, in Philadelphia, PA, on Earth Day, April 22, 2017. (

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22 April 2017


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National March for Science in Philadelphia

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22 April 2017