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Lake Oroville, California, February 2009 (ca.gov)
Sen. Barbara Mikulski (D-MD)
linking best practices
(iStock)
(Wikimedia)
Domestic violence awareness (Wikimedia)
Unemployed woman (iStock)
Obesity map (Wikimedia)
Florida Senate election, 2012 (Wikimedia)
E-cigarette smoker (Wikimedia)
Jose Gomez-Ibanez (Harvard)
Michoacán, Mexico (Wikimedia)
Los Angeles police car (Wikimedia)
Washington, D.C., K Street sign (Wikimedia)
Puerto Rican Day Parade, NYC 2011 (Wikimedia)
Jicarilla Apache boy, New Mexico, 2009 (Wikimedia)
Partners in Health, Haiti (Wikimedia)
Chinese Academy of Sciences, 2011 (Wikimedia)
(Wikimedia)
Howard University Founders Library (Wikimedia)
(Wikimedia)
High school football (Wikimedia)
'Harlem is our home' protest (Wikimedia)
Beijing traffic jam (Wikimedia)
(Wikimedia)
Los Angeles County Office of Ed (lacoe.edu)
Minneapolis (Wikimedia)
NBCNews.com
Fracking diagram (Wikipedia)
Rikers Island (Wikimedia)
Virtual computer network (Wikimedia)
Teenager texting while reading (Wikimedia)
Virginia ice cream shop (Wikimedia)
Dental caries (Wikimedia)
Ferguson, Mo., protests (Live Stream)
(dhhs.nh.gov)
Syracuse University class (Wikimedia)
Wisconsin students taking notes (Wikimedia)
(iStock)
Ganjiaxiang industrial panorama (Wikipedia)
McDonald's (Wikimedia)
Somerset Wind Farm, Pennsylvania (Wikimedia)
Battery Park, New York City (Wikimedia)
Ghana classroom (Wikimedia)
Hillary Clinton (Wikimedia)
New Jersey apartment complex (Wikimedia)
Presidential candidate Mitt Romney, 2012 (Wikimedia)
(Wikimedia)
Oracle, Silicon Valley (Wikimedia)
Rottweiler (Wikimedia)
Miami-Dade County
Sarah Harper (Oxford)
Mural (gand.uscourts.gov)
U.S. Customs and Border Protection
same-sex marriage (Wikimedia)
UC Santa Barbara (Wikimedia)
Philadelphia voter registration rally, 2008 (Wikimedia)
Lower 9th Ward, New Orleans (Wikimedia)
fatal car crash (Wikimedia)
U.S. Congress Hispanic Caucus, 2009 (Wikimedia)
birth-control pills (Wikimedia)
Teenager with toy gun (iStock)
Citibike rider, Columbus Circle, New York (Wikimedia)
Gucci store, Berlin (Wikimedia)
Young woman barista (Wikimedia)
EU suicide rate per 100,000 people (BJP)
Felicia Wu, Michigan State University
Eastern U.S. heatmap (EHP)
Julia Angwin, ProPublica (Shorenstein Center)
Nashville Tea Party rally (Wikimedia)
Massachusetts health center (Dominic Chavez, New York Times)
Nancy Pelosi (Wikimedia)
Childhood obesity (Wikimedia)
ISIS areas, June 2014 (Wikimedia)
OECD members (Wikimedia)
Syria 2012 (VOA/Wikimedia)
National Organic Program (USDA)
U.S. population (Census Bureau)
Durham, NC 1940 (Wikimedia)
(iStock)
(iStock)
(NIH.gov)
Lagos, Nigeria (Wikimedia)
Tahrir Square (Wikimedia)
MD Dept of Public Safety & Corrections
Hog confinement (EPA)
Digital-devices-(iStock)
Projected U.S. land-use change (PNAS)
USAID development assistance (USAID)
Melting iceberg in Argentina (Wikimedia)
Arizona Republic (Wikimedia)
Brain scan (iStock)
Students in health care class, Nigeria (Wikimedia)
White House ecard on gender pay gap
Rwanda genocide museum (Wikimedia)
Sailor visits patient in San Francisco VA hospital (Wikimedia)
Chief Justice John Roberts Jr. (Wikimedia)
New York City bike lane (Wikimedia)
(Wikimedia)
Boston "Big Dig" tunnel entrance (Wikimedia)
Retirees (iStock)
Middle District of Florida (uscourts.gov)
Los Angeles police car (Wikimedia)
Maryland children getting on a schoolbus (Wikipedia)
Vaccine preparation (Wikimedia)
Tennessee school integration, 1956 (Library of Congress)
(iStock)
organ transplant (Wikimedia)
San Quentin State Prison (Wikimedia)
Carls Jr. restaurant (Wikimedia)
Facebook rumor cascade (Friggeri et al.)
Illinois suburb (Wikimedia)
Leavenworth, Kan. (BOP-GAO)
Yahoo headquarters (Wikimedia)
Danville, Calif. (Wikimedia)
(Wikimedia)
Reforestation project (Wikimedia)
Take Back the Night march, N.M. 2010 (Wikimedia)
MSNBC FOX News
Cambodian factory (Brendan Brady)
New York City Fashion Center Business Improvement District (Wikimedia)
Chicago (Wikimedia)
Boston Marathon 2013 (Wikimedia)
(Wikimedia)
Wal-Mart, Charlotte, N.C. (Wikimedia)
Buffalo voting booth (Wikimedia)
(iStock)
Giddings State School, Texas (Wikimedia)
IRS tax form (iStock)
Lehman Bros (Wikimedia)
(Wikimedia)
General Motors Fairfax assembly plant, 2012 (Wikimedia)
Witness at genocide trial of former Guatemalan dictator Rios Montt (Wikipedia)
Police tape (iStock)
(Wikimedia)
FCI Englewood, Colo. (Bureau of Prisons)
Tiananmen Square (Des Equi Libros)
Status of U.S. Highways, Bridges, Transit (U.S.)
Viral cascade (Sharad Goel et al.)
ACA Medicare section (Healthcare.gov)
Pacific typhoons 2006 (NASA/Wikimedia)
San Jose,Calif. (Wikimedia)
Online assistance application, N.H. (screenshot)
Loading water for hydraulic fracturing (Andrew Maykuth, Philadelphia Inquirer)
Barack Obama (Wikimedia)
Kiev protests, December 1, 2013 (Wikimedia)
Colorado students (Wikimedia)
(Wikimedia)
U.S. glyphosate use, 2011 (USGS)
Polunsky on Twitter (screenshot)
Bank robbery, Arlington (Wikimedia)
(Wikimedia)
Houston highway (Wikimedia)
Apple store, Hong Kong (Wikimedia)
(Wikimedia)
(MIT Media Cloud)
(iStock)
David Carr (Shorenstein Center)
University of Nebraska (Wikimedia)
(Wikimedia)
Embryonic stem cells (Wikimedia)
Indianapolis Public Library (Wikimedia)
Computer operator, 1970s (Wikimedia)
California prison (Wikimedia)
China bullet train (Wikimedia)
(Wikimedia)
Amnesty International (Twitter)
Rwanda teacher (Wikimedia)
Chicago city hall green roof (Wikimedia)
(Harvard School of Public Health)
Richard Locke (MIT)
(Wikimedia)
(Wikimedia)
(Wikimedia)
(Wikimedia)
Niger delta gas flares (Wikimedia)
U.S. methane emissions (PNAS)
Detroit Renaissance Center (Wikimedia)
(Wikimedia)
Vladimir Putin, Sochi (Wikimedia)
Phone
Chicago parking meters (Wikimedia))
Union protester, Wisconsin (Wikimedia)
Rural poverty, 1973 (Wikimedia)
(iStock)
(iStock)
(Wikimedia)
Marijuana joint (Wikimedia)
(iStock)
Syrian refugees (FXB Center, Harvard)
UNICEF aid in Cote d'Ivoire
(Library of Congress)
(Wikimedia)
Afghanistan clinic (Wikimedia)
New York state assembly (Wikimedia)
Polar Vortex (Wikimedia)
Orleans Parish prison (Wikimedia)
Border patrol, Montana (Wikimedia)
(Wikimedia)
Obama 2012 ad (screenshot)
iPhone showing Twitter (iStock)
(Wikimedia)
Edward Snowden (Guardian)
(Wikimedia)
Ta-Nehisi Coates (Shorenstein Center)
(U.S. HUD)
Social media (Creative Commons)
(iStock)
Jerusalem (Wikimedia)
HP garage, Silicon Valley (Wikimedia)
Bryant Park, New York City (Wikimedia)
Promise Academy (Wikimedia)
(Wikimedia)
(Wikimedia)
(Wikimedia)
Standard & Poor's headquarters (Guardian)
(iStock)
Hanoi street (Wikimedia)
(Wikimedia)
New York City subway (Wikimedia)
Closed national park, 2013 (Wikimedia)
Rwanda (Millennium Villages)
(iStock)
(iStock)
In-car GPS (Wikimedia)
World Bank president Jim Yong Kim (Guardian)
(Wikimedia)
(HHS.gov)
malware-attack
(iStock)
Porto Alegre, Brazil (Wikimedia)
call of duty videogame (screenshot)
(Wikimedia)
Times Square McDonald's (Wikimedia)
SNAP education (USDA)
(iStock)
Arlington Cemetery (Wikimedia)
Data.gov (screenshot)
(iStock)
(iStock)
(iStock)
(Wikimedia)
(iStock)
Hurricane Ivan damage (Wikimedia)
Oracle CEO Lawrence J. Ellison (Wikimedia)
(iStock)
Al-Shabab commander (AFP)
(iStock)
Twitter sign-up (screenshot)
U.S. Treasury Department (Wikimedia)
North Carolina car crash (Wikimedia)
Talia Stroud (U.T. Austin)
Senator Ted Cruz (Wikimedia, Gage Skidmore)
House speaker John Boehner (Wikimedia)
FARC soldiers, Colombia (Wikimedia)
16th Street Mall, Denver (Wikimedia)
(iStock)
Westgate mall attack (Wikimedia)
ArabSpring
(iStock)
(iStock)
W. Gregory Steube, V.A. (Flickr)
Chicago L tracks (Wikimedia)
Rocinha favela, Brazil (Wikimedia)
Girl sitting on school desk (iStock)
Tokyo 2020 announcement (Wikimedia)
(Wikimedia)
(iStock)
Bashar al-Assad (Wikimedia))
(Wikimedia)
Yosemite Rim Fire (National Park Service)
Nexus 10 (Wikimedia)
Attorney General Eric Holder (Wikimedia)
Yosemite Rim Fire, 2013 (Wikimedia)
PresObama_AdmMullen
Chinese President Xi Jinping (Wikimedia)
(Wikimedia)
(iStock)
"Covering America," Christopher B. Daly
Destruction in Homs, Syria (Wikimedia)
(Wikimedia)
(iStock)
Iraqi refugees in Syria (Wikimedia)
(iStock)
Mexico deforestation (Wikimedia)
(iStock)
Hausa, Nigeria (Wikimedia)
Big data (iStock)
(David Shankbo, Wikimedia)
New U.S. citizens (Bush archives)
Bay Bridge, California (Wikimedia)
(iStock)
(iStock)
(Wikimedia)
Condominum construction (iStock)
U.S. gun show (Wikimedia)
(iStock)
(iStock)
Colombia troops (Wikimedia)
Atlanta skyline (Wikimedia)
Kentucky education department
Harvard graduation, 2012 (Harvard University)
Pakistani health clinic (Wikimedia)
Rising sun (NOAA)
China air pollution (Reuters)
I-35 bridge collapse (Wikimedia)
Grocery store in Ripton, Vermont (Tom Dudones)
Melissa Mayer, Yahoo CEO (Fortune Magazine)
NSA center (Wikimedia)
Prowler
ATF agent and guns (Wikimedia)
crime-hot-spots
(iStock)
(Wikimedia)
(iStock)
(Wikimedia)
Puerto Rican Day parade (Wikimedia)
(Wikimedia)
SupremeCourt
Library book shelves (Creative Commons)
Home construction (Wikimedia)
gaymarriage2
(Wikimedia)
Rich golfer (iStock)
N.Y. Times newsroom, 1942 (Wikimedia)
(Wikimedia)
(Auguste Deter, Wikimedia)
North Atlantic coast (NASA)
Bangkok airport (Wikimedia)
(iStock)
(Wikimedia)
Mumbai street (Wikimedia)
(iStock)
sun flare
March in San Jose (Wikimedia)
(iStock)
(iStock)
Cellphone cards in Uganda (Wikimedia)
(Wikimedia)
(iStock)
Hu Jintao and Jacob Zuma
(iStock)
(iStock)
Steve Jobs and Bill Gates (Wikimedia))
Social media (Creative Commons)
(Wikimedia)
(Wikimedia)
North Dakota flood (Wikimedia)
Brooklyn Chinese New Year (Wikimedia)
grandcaymanisland
Brooklyn bicyclists (Wikimedia)
Savar factory collapse, 2013 (Wikimedia)
(iStock)
Attorney General Eric Holder (Wikimedia)
Leavenworth prison (Wikimedia)
(Wikimedia)
Workplace stress (iStock)
USMC job fair (Wikimedia)
San Ysidro, Calif. (Wikimedia)
Lance Armstrong (Wikimedia)
Boeing factory (Wikimedia)
Anti-Romney ad (FlackCheck.org)
Economy up or down (iStock)
(iStock)
Library book shelves (Creative Commons)
Loud family, 1973 (Wikimedia)
Journalist Ken Ward (ThinkProgress)
(Wikimedia)
Students (iStock)
(iStock)
Library book shelves (Creative Commons)
(Wikimedia)
Tahrir Square (Wikimedia)
(iStock)
Chechnya conflict (Wikimedia)
Boston Marathon suspects (FBI, Wikimedia)
Princeton University (Wikimedia)
Boston Marathon bombing (Wikimedia)
Chavez, Kirchner, Lula (Wikimedia)
Malaysia (Wikimedia)
(iStock)
Big data (iStock)
(iStock)
(Wikimedia)
University of Louisville (Wikimedia)
Prairie Pothole Region
(iStock)
Omaha suburb (Wikimedia)
(iStock)
Iowa State (Wikimedia)
University of Michigan (Wikimedia)
Clinton signing TANF (Wikimedia)
Dave Cormier (Wikimedia)
green Internet
(Wikimedia)
Uganda (Wikimedia)
Nicaragua shack (iStock)
(Wikimedia)
World poverty, 2008 (IMF, Wikimedia)
(iStock)
Library book shelves (Creative Commons)
Village church (Wikimedia)
Durban climate conference (Wikimedia)
(iStock)
(iStock)
V.A. job fair (Flickr)
Anthony Davis (Wikimedia)
Engaged students (iStock)
(Wikimedia)
Newsweek (Wikimedia)
parents-and-child
Obama Facebook page
Nissan Leaf charging station (Wikimedia)
Atlanta, abandoned houses (Wikimedia)
Texting teen (iStock)
Telecommuting (Wikimedia)
Incandescent lightbulb (iStock)
Field of barley (Wikimedia)
Chicago Strike (ctunet)
(iStock)
(Wikimedia)
YouTube (screenshot)
(iStock)
Social media (Creative Commons)
Library book shelves (Creative Commons)
(Wikimedia)
Megabus-curbside-bus
Bus crash (New York State Police)
Wind turbine factory (Wikimedia)
(Wikimedia)
(iStock)
Pope Benedict XVI (Wikimedia)
Head Start, 1966 (Wikimedia)
(Wikimedia)
College graduation (Wikimedia)
U.S. debt clock (Wikimedia)
(Wikimedia)
Snow shoveling (Wikimedia)
(iStock)
(iStock)
Tallahassee map (Wikimedia)
(Wikimedia)
Boy at movies (iStock)
Ohio State University (Wikimedia)
Rio de Janeiro street (Wikimedia)
(iStock)
(Wikimedia)
(iStock)
(iStock)
Djenne, Mali (Wikimedia)
Latino youth (Wikimedia)
unemployed-man
Student highlighting work (iStock)
(iStock)
(iStock)
Sudan, Nile River (Wikimedia)
Female U.S. Marines, Afghanistan (Wikipedia)
Jody Brannon (National Journal)
Civil rights march, 1963 (Wikimedia)
Farmhand (iStock)
Hurricane Isaac (Wikimedia)
(iStock)
(iStock)
Kansas expressway (Wikimedia)
Doctor (iStock)
U.S. capitol building (Wikimedia)
(iStock)
(iStock)
Uganda (Wikimedia)
Immigrant arrest (Wikimedia)
Kobil, Benin (Wikimedia)
(Wikimedia)
(iStock)
(iStock)
(iStock)
(iStock)
(U.S. Department of Defense)
Soldier being evacuated (Army.mil)
Young worker at computer (iStock)
drug-seizure
Turkey irrigation (Wikimedia)
(iStock)
(U.S. Department of Defense)
Stressed mother (iStock)
City alley (Wikimedia)
FECsite1
(iStock)
VAWebsite.org
Stephen Colbert (Colbert Report)
Moving van (iStock)
(iStock)
Mumbai woman using phone (Wikimedia)
(iStock)
(iStock)
Greenland (Wikimedia)
(iStock)
Pregnant woman in field (iStock)
(iStock)
Immigration agent (ICE.gov)
(Wikimedia)
Oregon Health Authority website (Oregon.gov)
(iStock)
China, England meeting (Wikimedia)
Family bicycling (iStock)
(Wikimedia)
Shanghai street (Wikimedia)
Massachusetts lottery (Masslottery.com)
(iStock)
Colorado Community College, Fort Morgan (Wikimedia)
Veterans Affairs event (Wikimedia)
Camp Lejeune (U.S. Department of Veterans Affairs)
Mall and parking lot (Wikimedia)
Change that channel (iStock)
Greg Ip (The Economist)
Holiday shopper (iStock)
Woman on laptop, phone (iStock)
Abandoned factory (Wikimedia)
U.S. soldier saluting flag (iStock)
2nd-3rd grade classroom (iStock)
Two women moving in (iStock)
Protest (iStock)
U.S. Congress (iStock)
Obama oath of office (Wikimedia)
Singh, Wen meeting (Wikimedia)
Doctor (iStock)
I voted sign (iStock)
(iStock)
African-American students (iStock)
Immigration arrest (ICE.gov)
N.J. pier, Hurricane Sandy damage (Wikimedia)
Obama at Latino town hall (Reuters)
(iStock)
Gated community (Wikimedia)
University of Phoenix (Wikimedia)
Running (iStock)
Los Angeles federal court (UScourts.gov)
Obama supporters, 2008 (DNC)
U.S. Census (Wikimedia)
Uganda vote (Wikimedia)
Undecided voter (iStock)
(Wikimedia)
midnight-sun-Antarctica
(iStock)
Cleaning products
(iStock)
(iStock)
2008 debate, Ole Miss (Debates.org)
Stressed woman (iStock)
(iStock)
Test tubes and researcher (iStock)
USAID, Afghanistan (Wikimedia)
(Wikimedia)
(iStock)
(iStock)
(iStock)
(iStock)
Three industrial workers (iStock)
U.S. Department of Labor speaker (Department of Labor)
(iStock)
Ryan, Obama (Wikimedia)
(iStock)
(iStock)
Facebook vote (screenshot)
(Wikimedia)
Social Security card (iStock)
Gypsy moth caterpillar (Wikimedia)
Latino father and child (iStock)
Cairo rally (Wikimedia)
(iStock)
Empty pockets (iStock)
Community (iStock)
Chinese congress (Wikimedia)
(iStock)
Weidner Library (Harvard University)
Cannabis sativa (Wikimedia)
(iStock)
Piggybank (iStock)
Vote here, ID required (Wikimedia)
Student in college campus (iStock)
(iStock)
Mountain cross (iStock)
(Wikimedia)
Paul Ryan (Wikimedia)
Weight scale (iStock)
U.S. drought (iStock)
(iStock)
worker
(iStock)
Road paving (Wikimedia)
GOP debate, 2012 (Fox News)
Laptop, Arab Spring (Wikimedia)
(iStock)
(iStock)
Birth control pills (iStock)
(Wikimedia)
Plastic bottle recycling (iStock)
Obama tweets (Wikimedia)
(iStock)
(Wikimedia)
(Wikimedia)
(Wikimedia)
(Wikimedia)
New home construction (iStock)
Woman at typewriter (iStock)
Health costs (iStock)
Rick Perry (Wikimedia)
Girl reading texts (iStock)
(Wikimedia)
(Wikimedia)
shopper
Multitasking
multitasking
OilDrilling
(Wikimedia)
GlobalWarming
Ethnic Mexican dress (iStock)
David Karpf (G.W. University)
Trailer
Lira, Uganda (Wikimedia)
Steve-Jobs-with-iPad
bank and books
farm workers weeding spinach
New-York-City-flooding
(iStock)
Hilton-Head-beach
(iStock)
Paradise beach, Mexico (iStock)
organic-produce
(Wikimedia)
(iStock)
workers
(iStock)
partisan divide
(iStock)
Massachusetts Institute of Technology
HouseSale
soldier with daughter
Smallbusiness
CollegeGrad
public housing project
Teen
Sicily_Boat
business meeting
Scales
woman praying
Brown-UK-debate
Justice
Technician
(iStock)
Marketdata
TIGER sign (Wikipedia)
Obama taking oath (Wikimedia)
long-commute
(iStock)
Occupy Wall Street protest
NewJerseyStateHouse
Land-rights protesters in Jakarta, Indonesia (Wikipedia)
renwable-energy
Gas prices, 2006 (Wikimedia)
niagara-power-plant
President Barak Obama  Equal Pay Bill Signing East Room
Protest
Coke-Park-Allentown
Same-sex marriage (Wikimedia)
Ben Thanh, Vietnam (Wikimedia)
Teens1
newborn
juror
Alcohol addiction
fast-food-restaurant-keene-nh (flickr)
warning-sign-for-immigrants
patient-and-doctor
MedicalCosts
newborn
mortar board and cash
NASA_JanCompTemps11-12
ChenGuangcheng
Facebook
global-warming-skeptic (flickr)
Israeli Defense Force reservists
SocialSecurity
#Syria hashtag (Indiana University)
kid with hamburger
eldery woman at dinner
School
Hospital
IdentityTheft
young woman at work
garment-factory
Students
Chicago-skyline
Yabloko party, Moscow (Wikimedia)
(iStock)
Teen-Pregnancy
(Wikimedia)
foreclosure sale
Uganda child army
Global Internet penetration
Black female executive (iStock)
Baby Girl at the Kitchen Table
Pregnant woman in car
Ghana
(Wikimedia)
TheRoot
sunscreen
(iStock)
DoctorsOffice1
Chinese-imports
college girl
refugee map
(iStock)
working-woman
iphone-news-aps
(iStock)
LeagueofWomenVoters