When NASA's Viking landers conducted biological experiments on Mars in the 1970s, they reportedly found positive evidence of life — but may have accidentally drowned it in the process.NASAA photo of Mars taken by one of the Viking landers in 1976. In the 1970s, NASA sent two Viking landers to Mars to search the planet for signs of life. Now, astrobiologist Dirk Schulze-Makuch claims the landers did, indeed, find evidence of microbial life forms on Mars — but may have accidentally destroyed them in the process.

What happened on this day in history: Pierre-Auguste Renoir is born, Muhammad Ali wins his first world title, and more important events that occurred on February 25th.1570: Pope Pius V Excommunicates Queen Elizabeth I Pope Pius V excommunicates Queen Elizabeth I of England. Declaring the Protestant monarch a heretic, the pope stated that English Catholics did not have to remain loyal to Elizabeth and should remove her from the throne. However, Elizabeth’s subjects did not heed the pope’s command.

What happened on this day in history: King George V dies in 1936, President John F. Kennedy is inaugurated in 1961, and more.1327: King Edward II Is Deposed King Edward II of England is deposed and replaced with his teenage son, Edward III. The campaign to remove the king from power was led by his own wife, Isabelle, who invaded England in 1326 with the help of Roger Mortimer, possibly her lover.

The idea of marrying a dead person is older than the Magna Carta — and it's called ghost marriage.Image Source: Pixabay Imagine a world where “’til death do us part” wasn’t taken literally — where you could be married after death, and even get married after you’d already passed on. In actuality, there’s no need to imagine. Necrogamy, or marriage that takes place after death, is alive and well today. Though the form and frequency of the practice varies across the globe, the fact remains that in some places, the right to marry never ends, even beyond the grave…

Brandon Swanson was on his way home for spring break in May 2008 when he got into a minor car accident and called his parents for help. Then, he suddenly vanished without a trace.Wikimedia CommonsBrandon Swanson disappeared in the early hours of May 14, 2008. His final words to his parents on the phone were a chilling, “Oh s–t!” When 19-year-old Brandon Swanson crashed his car into a roadside ditch near Minnesota West Community and Technical College in 2008, he naturally called his parents for assistance.