The bustling city streets of Barcelona seem as good a place as any to mark World Population Day. More and more of us are heading to the city. It"s estimated that 2007 was the first year in which more people lived in cities than in rural areas. If current trends continue, by 2050 about two-thirds of the world population will be living in cities. City planners and government officials will need to account for this rapid increase as power grids, water supplies, public transit, and emergency services will all be stretched.
World Population Day
Today in History
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An unlikely friendship in the wild
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Don’t get lost in there
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National Cherry Blossom Festival
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South Padre Island, Texas
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Things are looking up
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Ukrainian Independence Day
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Happy Thanksgiving from an expert face-stuffer
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Kangaroo family for National Hugging Day
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World Space Week
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Celebrating whales—and a whale of a tale
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Kluane National Park
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Autumn in the Prosecco Hills
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Przewalskis horses, Hustai National Park, Mongolia
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International Womens Day
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White Sands National Park turns 90
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Think deep thoughts
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An oceanic valentine
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Grand Teton National Park
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An uncommon look at an American icon
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Shark Awareness Day
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Whitehaven Beach, Whitsunday Island, Australia
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Cumberland Island National Seashore
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Hey, who’s in charge here?
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Arctic fox in Norway
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Reflections on Memorial Day
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A lush, green escape
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Back to the nest
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Astronomy Day
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The Pearl of Siberia
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A bison preserve