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National Geographic 2021 3 March Mars
National Geographic 2021 (3) March
CONTENTS
On the Cover We've been fascinated for millennia by Mars, seen here in images taken by (from top) the European Space Agency's Mars Express, and the Viking Orbiter 1. EUROPEAN SPACE AGENCY-ESA, NASA/USGS
PROOF The 'Train Ladies' of Ukraine A tradition as old as rail travel in Ukraine, these safety signal officers work in tiny houses at rail crossings, and help keep things on track. PHOTOGRAPHS BY SASHA MASLOV
EXPLORE
THE BIG IDEA Natural Disasters? Maybe climate change harms should be called what they are: manmade natural disasters. BY ELIZABETH KOLBERT
DECODER Life After Fire Ecosystem engineers, black-backed woodpeckers are built for life amid partially burned trees. BY TAYLOR MAGGIACOMO
ALSO Ancient Amphibian Plants in Disguise Moonlit Line Walk
DISCOVERY From Lethal Trap to Artful Treasure Snares that once killed Uganda's wildlife now support communities. BY JANI HALL PHOTOGRAPHS BY ESTHER RUTH MBABAZI
ATLAS Setting Rivers Free Human influences have negatively affected the flows of most of Earth's 10 longest rivers. BY HEATHER GABRIEL SMITH AND CHRISTINA SHINTANI
ALSO Interpreting History
FEATURES
Our Obsession With Mars Missions Since sky-watchers in the third millennium B.C. described it as a "wandering star," Mars has fascinated people on Earth. It so intrigues us that by this month, 11 spacecraft and rovers are expected to be on or near the red planet. BY NADIA DRAKE PHOTOGRAPHS BY CRAIG CUTLER AND SPENCER LOWELL P. 38
Imprisoned While Innocent Thanks to scrutiny of the actions of prosecutors, public defenders, and police, as well as advances in DNA analysis and other sorts of forensic testing, 182 people have been found innocent and exonerated from death row since 1972. BY PHILLIP MORRIS PHOTOGRAPHS BY MARTIN SCHOELLER P. 66
A Line in the Mountains The story behind boundaries on the world's highest battlefield BY FREDDIE WILKINSON PHOTOGRAPHS BY CORY RICHARDS P.94
Greyhound Racing Critics of the dogs' treatment spur the end of tracks, race betting. BY CRAIG PITTMAN PHOTOGRAPHS BY ERIKA LARSEN P. 122
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