'Man walks' diaporamas de présentation

Can you solve the following riddles?

916 views • 61 slides

Deep freeze (Polar Vortex) in the U.S. Midwest

Deep freeze (Polar Vortex) in the U.S. Midwest. Hand Play. Jenny Hackett walks across a street in St. Louis as snow swirls around her. ( Jeff Roberson / Associated Press / January 6, 2014 ).

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American Transcendentalism

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Animalia

A gathering of pictures of animals recently captured by photographic artists everywhere throughout the world.- - By Leanne Burden Seidel

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Venice under water

Venice under water.

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Snow pummels Northeast

A huge winter storm slams the northeastern U.S., the region's second snowy blast in less than a week.

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Portraits of the people

Oversized, black-and-white portraits of ordinary people in unusual locations by French artist JR.

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Detroit: Most miserable city

Detroit was named by Forbes as the most miserable city in America. Now, Michigan's governor has declared the city a financial emergency

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Photos of the Week

Top photos from the past week.

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The Natural World

November can bring a variety of changes in the weather to many different regions. Among the long shadows of autumn, cold temperatures, winds and snow begin the transition to winter in the northern hemisphere.

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Iraq's ancient wonders

Samarra, Babylon and the ancient city of Ur are among the historic sites uncovered around Iraq.

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Cairo's graffiti - take two

No sooner had Egyptian authorities painted over a wall of revolutionary graffiti near Tahrir Square, the street artists were back with spray cans and a new target - President Mohamed Mursi

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Cairo's graffiti - take two

No sooner had Egyptian authorities painted over a wall of revolutionary graffiti near Tahrir Square, the street artists were back with spray cans and a new target - President Mohamed Mursi.

335 views • 18 slides

Saving the Berlin Wall

Protesters are trying to stop demolition of one of the last remaining stretches of the Berlin Wall, which they believe is an integral part of the city's history.

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Saving the Berlin Wall

Protesters are trying to stop demolition of one of the last remaining stretches of the Berlin Wall, which they believe is an integral part of the city's history.

249 views • 16 slides

Introduction to NLTK

346 views • 13 slides

WARM-UP

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Unrest in Venezuela

Soldiers and students face off at anti-Maduro rallies on the anniversary of last year's deadly protests.

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Venice under water

Seasonal high water floods the streets of the island city of Venice

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Venezuela's toilet paper shortage

Supplies of food and other basic products have been patchy in recent months, with long lines forming at supermarkets and rushes occurring when there is news of a new stock arrival.

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