1878day.year

President Rutherford B. Hayes gets the first telephone installed in the White House.

On December 1, 1878, President Rutherford B. Hayes became the first U.S. president to have a telephone installed in the White House.
President Rutherford B. Hayes welcomed the era of modern communication when he installed the White House's first telephone line on December 1, 1878. The new device connected the executive mansion to the interior telegraph network in the building, allowing direct voice communication with officials. This installation marked the first time a U.S. president had access to telephone technology, showcasing rapid technological advances of the period. The phone was manufactured by the Edison Telephone Company of New York and initially required an operator to place calls. Hayes's embrace of this innovation set a precedent for subsequent presidents and indicated the growing importance of instant communication in governance.
1878 Rutherford B. Hayes White House
1952day.year

The New York Daily News reports the news of Christine Jorgensen, the first notable case of sex reassignment surgery.

The New York Daily News reported Christine Jorgensen's groundbreaking sex reassignment surgery, bringing transgender issues into public view.
On December 1, 1952, the New York Daily News published the first mass media report on Christine Jorgensen's sex reassignment surgery in Denmark. Jorgensen's transition from male to female was a groundbreaking medical and social story. Her openness and media coverage sparked worldwide interest and discussions about gender identity. As the first widely known case, Jorgensen became a symbol for transgender people seeking recognition and rights. Her story challenged societal norms and paved the way for future advances in gender-affirming medicine. Christine Jorgensen's courage remains celebrated as a landmark moment in LGBT history and medical innovation.
1952 New York Daily News Christine Jorgensen sex reassignment surgery
1984day.year

NASA conducts the Controlled Impact Demonstration, wherein an airliner is deliberately crashed in order to test technologies and gather data to help improve survivability of crashes.

On December 1, 1984, NASA conducted the Controlled Impact Demonstration, deliberately crashing an airliner to test new crash survivability technologies.
NASA partnered with the FAA and the U.S. Air Force to plan a high-speed controlled crash of a repurposed transport jet. The project aimed to assess the effectiveness of fuel additive fire suppressants and advanced structural designs under realistic impact conditions. Remotely piloted, the airliner was flown into the Rogers Dry Lakebed at Edwards Air Force Base with precise control over speed and angle. Instrumentation inside and around the fuselage recorded stress, acceleration, and fire propagation data throughout the crash sequence. Post-impact analysis provided insights into occupant survival strategies, seat design, and cabin structural integrity. Findings informed improvements in fuel formulation, onboard fire-fighting systems, and crashworthy interiors. The Controlled Impact Demonstration remains a landmark in aerospace safety research and continues to influence modern standards.
1984 NASA Controlled Impact Demonstration
2020day.year

The Arecibo Telescope collapsed.

The iconic Arecibo radio telescope in Puerto Rico collapsed after catastrophic structural failures.
On December 1, 2020, the iconic Arecibo radio telescope in Puerto Rico collapsed after catastrophic structural failures. Completed in 1963, the 305-meter dish was the world's largest single-aperture radio telescope for over fifty years. It contributed to landmark discoveries such as the first binary pulsar and detailed mapping of planetary surfaces using radar. The telescope suffered cable failures in August and November 2020, leading to its official decommissioning. Before a controlled dismantling could be carried out, the suspended platform fell onto the dish and caused irreparable damage. The collapse ended decades of groundbreaking research and sent shockwaves through the global scientific community. Efforts are now underway to plan next-generation facilities to carry on Arecibo’s legacy.
2020 Arecibo Telescope