Warning: Some of these photos will inspire you, while others will make you cry. They are all really incredible, though. 1. A father and son, photographed in 1949, 2009, and 2011. photosight.ru 2. 1st Lt. Keith Wolowodiuk returns home and embraces his 5-month-old baby girl, Kaitlyn, and his wife. Getty 3. An elderly woman is carried out of flood waters in 2005 during Hurricane Katrina. Mario Tama / Via Getty 4. 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. Paula Bronstein / Via Getty The U.S. military sprayed roughly 20 million gallons of Agent Orange between 1961 and 1971 across Vietnam in an attempt to force out the enemy. Much of that contained a toxic gas called dioxin. As a result, a number of severe birth defects and Downs syndrome have plagued Vietnamese children. 5. A firefighter stops to give a koala water in the midst of intense fires. dailymail.co.uk 6. Volunteers distributing food to the homeless in the middle of winter in London. Peter Macdiarmid / Via Getty It's a photo of the charity group Street Souls in 2011. The group distributes food and sleeping bags during the winter. 7. A town hall meeting to discuss the death of 17-year-old unarmed Trayvon Martin. Gerardo Mora / Getty Images 8. A group of Haitian amputees, victims of the 2010 earthquake, playing soccer together a year later. Joe Raedle / Getty Images 9. A preemie baby grasping their father's finger. Luis Davilla / Via Getty 10. A boy watching as an Iraqi Emergency Response Brigade member searches his home. Warrick Page / Via Getty The brigade was looking for the boy's father in 2010 because he was suspected of planting IEDs in Baghdad. 11. An acid burns victim in Pakistan laughing in 2007 after having eye surgery. Paula Bronstein / Getty Images She was attacked when she was just 13 years old, after rejecting the advances of her teacher. 12. Carrie Bergonia, mourning the loss of her fiance, firefighter Joseph Ogren, on the twelfth anniversary of the September 11 attacks. Chris Pedota-Pool / Getty Images 13. A surgeon after a 23-hour (successful) heart transplant. JAMES L. STANFIELD/National Geographic Creative His assistant is asleep in the corner. 14. Two Carmelite nuns feeding children in the streets of the Philippines in 2012. Dondi Tawatao / Getty Images 15. Buddhist nuns perform their religious rituals in front of a large crowd in Myanmar. AP Photo/Gemunu Amarasinghe 16. A sign asking for volunteers in New York over Superstorm Sandy. Spencer Platt / Getty Images 17. A truck filled with highly toxic fuel is escorted by police as Greenpeace activists stage a protest. INGO WAGNER/AFP / Getty Images 18. A Christian in Egypt waits for customers, as Egypt's Christian minority faces constant discrimination. AP Photo/Bernat Armangue In a population of more than 80 million, Christians are the minority at just about 10 percent. 19. The Space Shuttle Enterprise flying over New York. Bruce Bennett / Via Getty 20. A man reacting to the news that his younger brother was killed, reportedly by gang violence. Nhat V. Meyer/San Jose Mercury News / Via mercurynews.com "That's my little baby brother," he told police. 21. A same-sex couple is married at San Francisco City Hall in 2008. Justin Sullivan / Getty Images 22. Two baby orangutans cling to their mother, while another 3-year-old orangutan kisses her. AP Photo/Wong Maye-E Credits: buzzfeed.com Share this story on Facebook with your friends.