1.A father and son, photographed in 1949, 2009, and 2011.
2.1st Lt. Keith Wolowodiuk returns home and embraces his 5-month-old baby girl, Kaitlyn, and his wife.
3.An elderly woman is carried out of flood waters in 2005 during Hurricane Katrina.
4.The 5th Anniversary of Hurricane Katrina in New Orleans, Louisiana.
5.Brothers Nguyen Van Chuoi (26) and Nguyen VanTrong (22) are held by their father as they suffer the effects of Agent Orange more than 30 years after the war in Vietnam.
6.Twenty seven angels stand down the street from the Sandy Hook School in 2012.
7.A firefighter stops to give a koala water in the midst of intense fires.
8.An alcoholic father with his son.
9.Volunteers distributing food to the homeless in the middle of winter in London.
10.Kelly Holmes celebrating her gold-medal win for the women's 1,500 metre final in 2004.
11.A town hall meeting to discuss the death of 17-year-old unarmed Trayvon Martin.
12.A group of Haitian amputees, victims of the 2010 earthquake, playing soccer together a year later.
13.A preemie baby grasping their father's finger.
14.A boy watching as an Iraqi Emergency Response Brigade member searches his home.
15.An acid burn victim in Pakistan laughing in 2007 after having eye surgery.
16.Carrie Bergonia, mourning the loss of her fiance, firefighter Joseph Ogren, on the twelfth anniversary of the September 11 attacks.
17.A surgeon after a 23-hour (successful) heart transplant.
18.Two Carmelite nuns feeding children in the streets of the Philippines in 2012.
19.A young Egyptian protestor throws stones at security forces in Cairo in 2012.
20.A firefighter holds a rescued cat he saved from a flooded home in Cedar Rapids, Iowa.
21.Buddhist nuns perform their religious rituals in front of a large crowd in Myanmar.
22.A sign asking for volunteers in New York over Superstorm Sandy.
23.A truck filled with highly toxic fuel is escorted by police as Greenpeace activists stage a protest.
24.A Christian in Egypt waits for customers, as Egypt's Christian minority faces constant discrimination.
25.The Space Shuttle Enterprise flying over New York.
26.Palestinian children play war games during the Muslim holiday Eid al-Fitr.
27.Two men read about the Amish schoolhouse shootings in 2006.
28.A man reacting to the news that his younger brother was killed, reportedly by gang violence.
29.A same-sex couple is married at San Francisco City Hall in 2008.
30.Two baby orangutans cling to their mother, while another 3-year-old orangutan kisses her.
