On this day in 1956, a baby gorilla named Colo enters the world at the Columbus Zoo in Ohio, becoming the first-ever gorilla born in captivity. Weighing in at approximately 4 pounds, Colo, a western lowland gorilla whose name was a combination of Columbus and Ohio, was the daughter of Millie and Mac, two gorillas captured in French Cameroon, Africa, who were brought to the Columbus Zoo in 1951. Before Colo's birth, gorillas found at zoos were caught in the wild, often by brutal means. In order to capture a gorilla when it was young and therefore still small enough to handle, hunters frequently had to kill the gorilla's parents and other family members.On this day in 1900, the first car to be produced under the Mercedes name is delivered to its buyer: Emil Jellinek, the Austrian car racer, auto dealer to the rich and famous, and bon vivant. Jellinek had commissioned the Mercedes car from the German company Daimler-Motoren-Gesellschaft. It was faster, lighter, and sleeker than any car the company had ever made before, and Jellinek was confident that it would win races so handily that besotted buyers would snap it up. (He was so confident that he bought 36 of them, paying D-M-G 550,000 marks in all.) In exchange for his extraordinary patronage, the company agreed to name its new machine after Jellinek's 11-year-old daughter, Mercedes.On this day in 1978, John Wayne Gacy confesses to police to killing over two dozen boys and young men and burying their bodies under his suburban Chicago home. In March 1980, Gacy was convicted of 33 sex-related murders, committed between 1972 and 1978, and given the death penalty. At the time, he was the worst serial killer in modern American history. George Ridgway, known as the Green River Killer, overtook Gacy in November 2003, when he admitted to murdering 48 women in the Pacific Northwest.Two express trains collide in Magdeburg, Germany, killing more than 100 people on this day in 1939. Occurring at the outset of World War II, the accident was probably a result of the fact that the country's best rail engineers had all been conscripted into the military.On the New York City subway, Bernhard Goetz, a 45-year-old white male, shoots four young black men after they surround him and ask for $5. After wounding three of the unarmed men, Goetz pointed his gun at 18-year-old Darrell Cabey, who was not wounded but cowering terrified in the subway car, and said, You don't look too bad, here's another. Goetz then shot Cabey in the back, severing his spinal cord. Three of the youths recovered, but Cabey was paralyzed and suffered permanent brain damage.If the initial reviews failed to recognize it as one of the greatest pieces of music ever written, one needs to understand the adverse conditions under which the work was first heard. The concert venue was freezing cold; it was more than two hours into a mammoth four-hour program before the piece began; and the orchestra played poorly enough that day to force the nearly deaf composeralso acting as conductor and pianistto stop the ensemble partway into one passage and start again from the very beginning. It was, all in all, a very inauspicious beginning for what would soon become the world's most recognizable piece of classical music: Ludwig van Beethoven's Symphony No. 5 in C Minor, Op. 67the Fifth Symphony which received its world premiere on this day in 1808.On December 22, 1971, the Los Angeles Lakers of the National Basketball Association (NBA) defeat the Baltimore Bullets 127-120 in Baltimore for their 27th straight victory, breaking the previous record for the longest winning streak in professional sports. They had previously been tied with baseballs New York Giants, who won 26 games during the 1916 season.On this day, British Prime Minister Winston Churchill arrives in Washington, D.C. for a series of meetings with President Franklin Delano Roosevelt on a unified Anglo-American war strategy and a future peace.history.com