Your phone does not actually know how much battery it has left; a fuel-gauge chip estimates the percentage from current, voltage, temperature, and a model of the cell, with a late correction sometimes turning 15 percent into 3 percent in less than a minute Saving Tips July 21, 2026 A phone can display 15 percent while its lithium-ion cell is already approaching the voltage at which the device must…
In May 2017, an NSA contractor named Reality Winner mailed a printed classified document to a news outlet, and federal agents identified her within days because the yellow tracking dots on the page named the exact printer in her office and the minute she had pressed print. Saving Tips June 6, 2026 Reality Winner was 25 years old, a contractor at an NSA facility in Augusta, Georgia, when she folded a five-page…
In 1977, Ann Druyan recorded an hour of her brainwaves and heartbeat two days after she and Carl Sagan agreed to marry, and NASA pressed the compressed minute onto Voyager’s Golden Record as a private love signal now more than 25 billion kilometres from Earth Saving Tips June 4, 2026 On June 3, 1977, Ann Druyan sat for an hour-long recording session in New York while instruments captured the electrical…
