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1970һաƬϸ49Ļ¼

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19692£ʯ͹˾ԭй©ʥͰ800ƽӢͺ⵽Ⱦǵ䶯һʱһ¼ʱ˹ݲԱGaylord Nelson1970֯˵һջͬ꣬1969ġһ߷ЧҪÿһشлӰ ӰVERNON MERRITT III, THE LIFE PICTURE COLLECTION/GETTY IMAGES

׫ģSYDNEY COMBS BRIAN CLARK HOWARD

1970һմÿ궼ӿµɾͣڸϹж֮ʣһع49Ļ̱ɡ

1970꣬һգEarth Day죬ȫԼ2000ΪϽͷеƶ£ƶΪֹҪ:(1970)ġ(1970)ˮ(1972)(1972)͡ȫˮ(1974)

Դ֮ÿ422ձȷΪȻѲԭ֮ƣÿضб־ԵĻ¼

ܣصĴŦԼμϹжᣬֿеļƻʹŷδ1045%2050ʵŷš

ڷۿܵĽʱǻ㼯49ɾ͡Եһÿ궼һԷӳĿǰȡõĽչԼдƽ

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1948꣬ŵ˹ݵũʹúDDTɱDDTķ߻ŵѧǺʶᵼصĻ⣬ĵDZ䱡1972꣬DDTڱãͺӥӹΣ ƬṩEVERETT COLLECTION INC/ALAMY STOCK PHOTO

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1972꡶ũҩƷ䲼֮ǰܻҪũҩͻӰ졣ڣũȨ֪ũҩʵԡ ӰJAMES P. BLAIR, NAT GEO IMAGE COLLECTION

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1952꣬ݿĸĿӺӣCuyahoga RiverȾأˮ漸ȫۺ⸲ǣ20󣬹ͨˡˮƶˮзﴦ÷ּڻָȫкĻǿԺ޹˼ɵȥӾ͵㣬ͼеĿӺˮҲڡ ӰPETE MCBRIDE, NAT GEO IMAGE COLLECTION

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1972꣬ڡ󱣻оͱƶ£󱣻ʼǵʷĻЩıӻ֮£ijͼֻĺĺ󱣻Ӿͷ ӰRALPH LEE HOPKINS, NAT GEO IMAGE COLLECTION

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ͺţˮӵֻţ1972꡶ϸ񱣻ӶڱɱϮ ӰBRIAN SKERRY, NAT GEO IMAGE COLLECTION

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ʶͱ󣬹1973ͨˡΣ÷ΪϵĶֲṩֱ籣ؼϢءڷɵİ£ѾĻ ӰJENNIFER HAYES, NAT GEO IMAGE COLLECTION

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1975꣬ΣҰֲֹó׹ԼЧȫΣּ岿λóܵơʱ𣬸ʼͬŬ˽͵߱ǵ̬ȣޱҹ԰ķ͵չϣԱǷ100ֽɻ ӰCHARLIE HAMILTON JAMES, NAT GEO IMAGE COLLECTION

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1974꣬ͨˡȫˮΪˮϵͳ趨׼Ȼгжܴﵽ׼2014굽2018꣬ЪݸصľʹƿװˮԱܿˮеǦȾ ӰEUGENE RICHARDS, NAT GEO IMAGE COLLECTION

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1974꣬ŦԼŶӵżͣͬ꣬ʼ̭еǦ ֱ1995ƻųɡԸýʵʩѪҺеǦƽ½75%ϡ Ӱ ALLAN TANNENBAUM, GETTY IMAGES

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1976꣬жʿƷͨЩཡ򻷾شвʿʼܵƻ򱻽á󣬶(PCBs)ȾƷͼеıѹ񳡡 ӰJAMES P. BLAIR, NAT GEO IMAGE COLLECTION

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1978꣬ŦԼǼٲ˺жй©Ϲֲⳡ͹˹ҵȾཡΣصһλҳڶӻ֯Ϊ㻷˰ ӰMICHEL PHILIPPOT SYGMA/GETTY IMAGES

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1980꣬ڶ˺¼ķŭٳˡۺϻӦηͨ÷ͨΪ𡱣ּжȾ߳еá2016꣬Ϊһ֣ŦԼ³ֵĸ˹˺ӱɾ Ӱ ANDREW LICHTENSTEIN, CORBIS/GETTY IMAGES

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1980ĩͨˡ˹ӹر4000ĻҰõаʸ-ʥ˹ҹ԰ͱͼе֮š ӰMICHAEL MELFORD, NAT GEO IMAGE COLLECTION

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1982꣬ίԱѹͣȫΧڵҵ1976ƬУһƤƵ׼һͷĨ㾨2002ʲίԱᡣ ӰO. LOUIS MAZZATENTA, NAT GEO IMAGE COLLECTION

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1986꣬ͿʼʹÿİװԻӦ߶ԶѻɽĭĿ顣һı˾һ¼Ԫ뻷֯չһȡӦʩٰװԻӰ졣 ӰMARIO RUIZ, THE LIFE IMAGES COLLECTION/GETTY IMAGES

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ֱУȾˮе8ͥW.R.Grace˾ϣƸù˾ȾֱеIJˮĿİڻж ӰJOHN TLUMACKI, THE BOSTON GLOBE/GETTY IMAGES

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1987꣬ҰѧҾʣ27ֻͺӥȫȦʵʩֳƻȻһ𼸺ƻΪӰڿѧǵŬ£dzɹ˺һֵѳ400ֻ ӰJOEL SARTORE, NATIONAL GEOGRAPHIC PHOTO ARK, NAT GEO IMAGE COLLECTION

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1987꣬26Ҿ͡鶨顷һ£鶨ҪֹͣʹƻΧĻѧʣȷͨڷСնС ӰMARK THIESSEN, NAT GEO IMAGE COLLECTION

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1970꣬һλʦϸۿһװоˮijƿƿеľˮˮõġҵȾõ֮󣬼ܻĿתˮһףˮ1987ġˮʷˡˮѭ𡱣Ϊȫˮϵͳṩʽ ӰJAMES P. BLAIR, NAT GEO IMAGE COLLECTION

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80ĩһһҽƷ˶ͯˣĺ̲ѹ1988ͨˡҽƷ׷ٷ÷ּȷҽƷҵԱƴҽƷ Ӱ KAREN KASMAUSKI, NAT GEO IMAGE COLLECTION

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ݵDzɽ̲֮索ʯ޿ᡢܺãʯޱΪһϣԽԽ֤ݱܵһֺķΰ1989꿪ʼ̭ʯޡ ӰDON BARTLETTI, LOS ANGELES TIMES/GETTY IMAGES

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1990꣬һش£ӦͳĽ⡣÷Ⱦ߽˸ΪϸɺͼලƶȣܶҶԴ Ӱ ROBB KENDRICK, NAT GEO IMAGE COLLECTION

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1992꣬Ϲ뷢չڰԼ¬ٿλɹķᣬ֯ٵ̽׷չжλϣʼ͹ͬŬӦ仯һ¡ ӰACANIR NIKO, AFP/GETTY IMAGES

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ĺѩһȱΪѾֱ1981꣬һֻȥѩ³ǵҰѧҶһٶȺȦֳȺѴ1000ֻ ӰJOEL SARTORE, NATIONAL GEOGRAPHIC PHOTO ARK, NAT GEO IMAGE COLLECTION

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1993꣬Masry & VititoeʦְԱErin BrokovichͬӮһӲ̣սʤһұȾˮļݹҵ˾3.33Ԫ⳥Ϊֹ⳥ֱһʡգErin Brokovichͬǿűij˵ӰЭ Ӱ DAVID MCNEW, GETTY IMAGES

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ݵ˹԰СѧԡȻ£ѧУ֮һ1993꣬ɫίԱӴ˻ƸĻڲϷչ֮С ӰSAM KITTNER, NAT GEO IMAGE COLLECTION

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1993꣬ǩˡԹԼŵʿϣڹԼһ׶ΣҲǵ2020ףиĿ꣬뱣룬ٲ Ӱ FRANS LANTING, NAT GEO IMAGE COLLECTION

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1995꣬ʧ˼ֻ֮ص˻ʯҹ԰ǺܿվʳĶˣ½ƽϵı˺򡣽죬ʯ԰ȻһҪıͬʱҲһ̬ʵҡ ӰRONAN DONOVAN, NAT GEO IMAGE COLLECTION

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ڵεĽúϢرij̨1995꣬ҵҰʽѰͷӱбƳ״̬Ϊв֡2007꣬Ұͷﵽ10000ԣƳв ӰKLAUS NIGGE, NAT GEO IMAGE COLLECTION

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1997꣬ǩˡ־쵼ڹͬӦ仯ڻڳԡ ӰJAMES BALOG, NAT GEO IMAGE COLLECTION

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2000꣬˹гʱʶ˻϶֮ڣÿ˾Ƴ˻϶˹ȻܸߣͼΪԱڰ֪ط϶ϼ鳵ܡ Ӱ NORIKO HAYASHI, BLOOMBERG/GETTY IMAGES

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20001025գɫƽ֯ʾڻʢⱻʱڿһٻ¯áʮڽάȨƶ£ʶж֮ﵽ˿ǰĸ߶ȡ ӰALEX WONG, NEWSMAKERS/GETTY IMAGES

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2001꣬·ʽͨ飬ij̨2300ԭʼɭֺͲԭõ˱ӻڴ󲿷ֵĵ·ͷľ⵽ƻͼеٲλڰ˹˹ɭ֣ɭҲڡ·ı֮С Ӱ MELISSA FARLOW, NAT GEO IMAGE COLLECTION

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2002꣬ͨԴͶϱ׼ϣ2030ԴռԴһ롣˺ݷ׷Ч¡ҲҰIJĿ֣꣬ڳӵйҵ԰ƻ2050ʵ̼к ӰLUCA LOCATELLI, NAT GEO IMAGE COLLECTION

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2002꣬William McDonoughMichael Braungartҡҡһ˼˷Ѹ˶ⳡ˶IJߣʦ˾ְԱ˷ϵ뷨 ӰLUKE SHARRETT, BLOOMBERG/GETTY IMAGES

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Elon Musk2003괴˹˾(Tesla Motors)õ綯»صǰغϵСҲ׷Ч£ʼз綯 ӰPATRICK T. FALLON, BLOOMBERG/GETTY IMAGES

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2006꣬¼ƬԺӵܺջ˹Ҳùڶ仯в˸ʶ ӰSAMANTHA SIN, AFP/GETTY IMAGES

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˹Ӳ˹ж壬洬ڲ㡣2006꣬ʼͨƲ̷ݶ淶ҵ㣬ϣ˹пɳIJҵƲ̷ݶÿ̬ϵͳĽӶӡ ӰMICHAEL MELFORD, NAT GEO IMAGE COLLECTION

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2007꣬šԴ밲ȫİ䲼ȼЧҲ֮ߡ̶һֱЩ׼Ϊ˴ﵽ׼ջѡ񣬹˾ڿ϶͵綯ͼʾ̼άıi8i3綯 Ӱ LUCA LOCATELLI, NAT GEO IMAGE COLLECTION

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DzĴҴҵشŦԼ빫԰Ĺšÿн2500߹93ﳤĵ·Ųк˶ķңָ˾Walk Score2007ճù˾˵߷̶ȶԳСȽ֡ Ӱ SIMON ROBERTS, NAT GEO IMAGE COLLECTION

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ŦԼ³ִŹ԰һ·˼Ͱ2007꣬ŦԼгMichael Bloombergһۺϼƻüƻּƹ˷ѡܡֲ̻еȡ ӰDON EMMERT, AFP/GETTY IMAGES

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2009꣬ͳΡwʲ(George W. Bush)̫ƽƫԶ캣ұ(Pacific Remote Islands Marine National Monument)Դ˱һЩԭʼˮ򡣺°ͳñ󵽽130ƽǼݵڵˮܵͼʾ̫ƽҰﱣ ӰTUI DE ROY, MINDEN PICTURES/NAT GEO IMAGE COLLECTION

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ݺձ϶żȱΣ¹ɺΪ㡢ͶϺɺṩϢءΪ˱̬еĺ2010һΪĽֹˮ򿪲ʯͺȻͳϣ¿Ÿˮ Ӱ DAVID DOUBILET, NAT GEO IMAGE COLLECTION

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2012꣬ʢݵİߴӱߺӻָ˳ͨƶָȻ˶УεĴӲĿŲܻ֮ع顣 ӰJANET JENSEN, TACOMA NEWS TRIBUNE/GETTY IMAGES

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2015ĩڰٿ仯¼ƻһ¡̸Уôȫƽ¶ȿ1.5϶ȣջͨΪף谣ƶӳ˵ƹͶӰ201761,˳Э,䡰ڲλ˺˰ʧʧҵʽ͡رպ;½ ӰCHESNOT, GETTY IMAGES

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2017꣬쵼µĻƳٰ°Գļܡһַβ̼䵽糧ԴŷʱͻγɡϽĹұ׼10ڷ֮75ߵ70ԤƵ2025꣬˾ٽΪʡ29ڵ59ԪҽƳɱ ӰJOHN BURCHAM, NAT GEO IMAGE COLLECTION

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ʿʾʮıΣвĶΣַӦеá2018꣬СΪһӱΣϳ2017꣬ܺͺͷqٷֱ20172014ӱΣɾ ӰJOEL SARTORE, NATIONAL GEOGRAPHIC PHOTO ARK/NAT GEO IMAGE COLLECTION

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2019꣬ͳǩһΧȫ80أȹҹ԰(ͼ)ӭµšߵĹ㷺֧֣»52Ļĵ;ݺͿµĹұ;ٹĺҰͷ羰Ŀı;ˮĹģҲ󡣡 Ӱ ALEX TREADWAY, NAT GEO IMAGE COLLECTION

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