This weekend, Hurricane Harvey struck the east coast of Texas and flooded the city of Houston. A hundred and seventeen years ago this week, a similar storm was headed straight for the nearby city of Galveston, one of the richest cities in the country. What followed was a deadly disaster which surprised Galveston and left thousands dead in its wake.

Who wouldn't like to go on a sightseeing flight? Have a glass of champagne, mingle with your fellow sightseers, and peer down in wonder at the glorious sights below. But for Air New Zealand Flight 901, the November 28, 1979, flight wouldn't end with a cheery goodbye to Antarctica and a swift turnaround back to Auckland, but in a smoldering pile of wreckage on the slopes of Mount Erebus.

In this short first entry in our series on the AIDS epidemic, we see the very beginnings of the AIDS virus -- not in the late 1970s, but in a jungle in Cameroon at the turn of the 20th century. We also look at a few early cases of HIV infection prior to the epidemic's explosion.

Most of us have been to a sporting event at one time or another in our lives. In this day and age, we can spot the safety improvements which have been added the stadiums and arenas due to tragedies which struck in the past: fire doors with lit EXIT signs overhead; stadiums made of concrete, steel, and plastic rather than wood; sprinkler systems and fire extinguishers in multiple locations. One of the tragedies which led to more thorough precautions being taken in stadiums in Great Britain started with a dropped cigarette during a football match and ended with 56 dead.

It's 1925 and you leave the house on a Wednesday morning three weeks before Easter ready to go to work delivering mail in the Ozark Mountains of Missouri. While passing near a rural field in your horse and buggy, you see the telltale swirl of a newly formed tornado touching down. But what you and no one else in the Midwest know is that you just saw the birth of the deadliest tornado in American history.

The San Francisco-Oakland area had baseball fever. Both of their teams -- the Giants and the Athletics respectively -- would go up against one another in Game Three of the "Battle of the Bay" World Series. People across the country tuned in at 5:00 PM local time to watch the pre-game with announcers Al Michaels and Tim McCarver. But four minutes later, the video and audio would both abruptly cut out. Then Al Michaels' voice could be heard saying something which shocked the audience: "Tell you what, I think we're having an earth--"

It was always busy at the McDonald's restaurant on San Ysidro Boulevard. Kids invaded the play area whether or not they'd eaten in the restaurant, and for people arriving from the Tijuana border crossing only a mile south, the golden arches were like a welcome friends greeting them hello as they arrived in America. But on July 18, 1984, a stranger walked into the restaurant armed to the teeth, ready to finally end the battle in his mind.

You're the engineer on an empty troop train in the middle of the night in 1918, headed west to pick up more soldiers meant to head off to the war in Europe. You've had little sleep but you've eaten well and taken some pills for your kidneys. Almost all of the rest of the crew are back in the caboose -- perhaps playing cards or sleeping, with no passengers to tend to. You are alone, and after a while the movement of the train rocks you right to sleep. So you don't see the circus train cars on the tracks in front of you, not until it's too late.

They say God never gives you more than you can handle. On January 13, 1982, He sure as hell attempted to do so to the city of Washington, DC. Snow cascaded from the sky, making driving home from work to the suburbs a treacherous undertaking. At National Airport, an Air Florida flight with a crew inexperienced in flying under winter conditions waited impatiently for takeoff. And underneath the city, an improperly closed rail switch and a subway train packed to the gills would have a devastating introduction to one another.

The harrowing video aired on a loop around the world -- a passenger airliner gliding down toward the sea near a tourist-filled beach, then tumbling over and over as it struck the water. What happened in Ethiopian Airlines Flight 961 in the hours prior to its crash into the sea near the Comoros Islands required bravery, quick patience, and resourcefulness out of pilot Leul Abate -- and more than a little bit of luck. (My apologies for any audio issues. I had some microphone problems this week.)