Nathan Henn, Volunteer Killed in Uganda

American aid worker Nathan Henn was among the 74 killed by twin bombings in Uganda, the blasts targeting crowds gathered to watch the World Cup final on TV.

The Wreck of the Edmund Fitzgerald

We remember the Edmund Fitzgerald, one of the worst (and best-known) nautical disasters in American history.

MGM Grand Hotel Fire

It was one of the deadliest hotel fires in American history.

Christa McAuliffe: Teacher, Astronaut

On Jan. 28, 1986, teacher Christa McAuliffe nearly became the first civilian in space.

The Big Bopper Story

We look back at The Big Bopper's misunderstood and underappreciated musical legacy.

Disaster Chaplain

In 2001 Father Charles Bisgrove became a certified disaster chaplain for the National Transportation Safety Board in 2001. Only weeks later he was called into service.

Legacy Letters: Moving on with life and love after 9/11

Poignant letters written by 9/11 families to their departed loved ones speak of grief and sorrow, but also of hope and love.

September 11 First Responders

Paramedics, firefighters and police were among the first to respond to the emergency situation created by terrorist attacks at the World Trade Center. Still others, including Red Cross volunteers, did what they could to help in the aftermath.

Remembering 9/11, Ten Years Later

We commemorate the 10th anniversary of Sept. 11 by remembering the past and reflecting on how to build our future.

Remembering the Tucson Shooting Victims

We remember the lives lost one year ago today as U.S. Congresswoman Gabrielle Giffords met with her consituents in a Safeway parking lot.

Remembering Daniel Pearl

In January 2002, the U.S. was still on edge, shell-shocked by how our world had changed in the wake of 9/11 – and terrified of how it would continue to change...

Remembering Ohio Students

The three Chardon High juniors who were killed in Monday's shooting were described by friends, family and teachers as polite and good-hearted.

The Truth about the Titanic

As the centennial of the Titanic disaster approached, one of the biggest news stories wasn't the actual anniversary, nor was it the re-release of James Cameron's blockbuster movie in 3D.

Virginia Tech: Peace and Healing

On April 16, 2007, tragedy struck in Virginia and reverberated around the world.

Aurora, Colorado: Faces of the Victims

The names of the victims of the shooting in Aurora, Colorado were released on Sunday, and we began to see their faces and learn about their lives.

Wisconsin Weeps

We now know the names and stories of the six who were killed in the attack at the Sikh Temple in Oak Creek, Wisconsin.

We Remember the Munich 11

In Munich 1972, Olympic joy turned to tragedy when Israeli athletes and coaches were kidnapped and murdered.

Goodness Outshines Violence

In the wake of the Sandy Hook shootings, we remind ourselves that goodness can outshine violence… if we let it.

26 Ways to Remember

Today, we look for the good we all can do to honor the 26 children and teachers who died at Sandy Hook Elementary School.

Remembering the Columbia Seven

Ten years ago today, the world witnessed a disaster when the disintegrated on reentry after a successful mission, killing the seven astronauts aboard. It was a shocking tragedy, leaving us to mourn yet another shuttle crew as we did in 1986 after the exploded shortly after lift-off.

Remembering Trayvon Martin

One year ago today, tragedy hit a quiet community in Florida when neighborhood watch leader George Zimmerman fatally shot teenager Trayvon Martin.

Remembering Waco

We pause today to remember the terrible events that took place 20 years ago in Waco, Texas.

Last Notes to His Loved Ones

David Welch's last days were spent reaching out to the family he'd never see again.

From Ashes Comes a New Home

When Marie Rose Abad was killed at the World Trade Center in the 9/11 terrorist attacks, she became a hero to strangers living thousands of miles away.

Grandparents Build Playground in Children's Memory

The March 22 landslide in Oso, Washington, left 43 people dead, including two young boys: Wyatt and Hunter Ruthven. To honor the boys' memories, their grandparents built a playground in nearby Arlington so that other children would be able to have fun. The boys' maternal grandparents, Karen and Tom Psonka, whose daughter Katie and her husband, Shane, also died in the landslide, led fundraising efforts for the playground, which opened in early September.

Mom Dies After Saving Daughter

When a routine shopping trip turned deadly, Colleen Segbers gave her life to protect her daughter.

Ebola Victims Gone, Not Forgotten

As the Ebola epidemic spreads in West Africa, families of the victims are facing a confusing and heartbreaking situation.

Heroic Efforts to Honor Child's Memory

The death of 5-year-old Jeffrey Baldwin shook Toronto. Eleven years later, a stranger started a campaign to ensure the boy would not be forgotten.

Father's Musical Tribute to Sandy Hook

How one Sandy Hook father is paying tribute to his slain daughter.

Father Loses Wife, Sons in Plane Crash

On a December morning in 2014, a small plane crashed into a home in Maryland and burst into flames. Now Ken Gemmell is left to pick up the pieces and carry on without his wife and two of his three children.

Facts About the Charlie Hebdo Shooting in France

On Jan. 7, 2015, 12 people were shot and killed, and several more were wounded in and around the offices of satirical magazine Charlie Hebdo in Paris.

Update: Bodies Recovered From AirAsia Jet

The discovery of bodies and aircraft parts in the Java Sea sheds light on AirAsia Flight QZ8501.

Deadly Metro-North Train Crash

Most of us don't think our lives will end during our evening commute, but that's what happened Feb. 3, 2015, to six people in Valhalla, New York.

TransAsia Airways Disaster

By now many of us have seen the terrifying footage of TransAsia Airways Flight GE235 striking a highway and a taxi with its wingtip before crashing into the Keelung River in Taipei, Taiwan.

French Olympians Perish in Helicopter Crash

Three French Olympic athletes were killed in Argentina when two helicopters collided and crashed.

Remembering Those Lost on Germanwings Flight 4U9525

On March 24, 2015, Germanwings Flight 4U9525 crashed in the Alps of France, killing all 144 passengers and all six crew members.

America Honors Oklahoma City Bombing Victims on 20th Anniversary

April 19, 2015, marked the 20th anniversary of the Oklahoma City bombing, one of the deadliest terrorist attacks ever to occur on U.S. soil.

Remembering the Victims of the Philadelphia Amtrak Train Crash

Remembering the eight who died in the Philadelphia derailment of Amtrak train 188.

UCLA Professor Killed in Shooting

A professor was killed in a shooting on the UCLA campus.

Voices of Support After the Charleston Shooting

Although atrocities such as the June 17 massacre of nine people in a historic Charleston, South Carolina, church shake us to our core, it gives us hope to see people coming together online, offering support and sympathy.

A Global Tribute for Aylan Kurdi

Though they never met 3-year-old Aylan Kurdi in person, people across the globe are mourning his death.

The Day That Changed Their Lives

While many Americans slowly made their way back to normality after Sept. 11, 2001, a few didn't – or couldn't – fall back into routine.

Oregon Community College Shooting Victims

10 people were killed and more than 20 others injured in a shooting at Oregon's Umpqua Community College.

South Carolina Flood Victims

Days of torrential rains kept much of South Carolina and its capital gripped by floodwaters early Monday as emergency responders promised renewed door-to-door searches for anyone still trapped after a weekend deluge and hundreds of rescues, The Associated Press reported.

Oregon School Shooting: The Names We Choose To Remember

These are the names we choose to remember in the aftermath of a school shooting tragedy.

Canada Whale Tour Boat Victims

Five people died after awhalewatching boat with 27 people aboard sank off Vancouver Island Sunday and one person remained missing, Canadian authorities said, according to The Associated Press.

South Sudan Plane Crash Victims

A cargo plane that was reportedly overloaded crashed along the banks of the Nile River after taking off from the South Sudan's capital, killing at least 25 people, witnesses and officials said, according to The Associated Press. An Associated Press reporter at the scene of the crash saw the bodies, including those of women children. Parts of the plane were scattered in a bushy area on banks of the Nile with a few homes nearby. Packages of cheap sandals, cigarettes, beer and crackers were strewn amid the wreckage. The white tail section protruded from the brush.

Tragedies That Went Under the Radar

2015 was a year of horrific tragedy, as attacks in Paris, Beirut, Niger, Baghdad and elsewhere left hundreds dead or wounded.

Victims of Nigeria Bombings

At least 46 people have died after two bombing incidents in Nigeria Tuesday, according to CNN. Hundreds more are injured. The two attacks took place in two different cities 400 miles apart, but they may share a perpetrator.