LGM

To achieve such precision, Rice graduate student and co-author Asmita Banerjee worked in a freezer room, cutting 100-gram chunks of ice taken from ice cores from Greenland and Antarctica that dated to the LGM.

Based on the proportional abundance of O2 made of oxygen-18 in the samples, the team concluded that the upper troposphere—a region of the atmosphere corresponding to an altitude of 10 to 11 kilometers—was between 6℃ and 9℃ colder in the LGM than today, they report in the 17 August issue of AGU Advances.

During the frigid LGM, the upper troposphere dried and cooled, reducing some of the leakage to space and keeping the planet a bit warmer.

But in everything from the detail with which he situates his old-school stirrups before each game to the notes he writes himself at his locker, from exuberant interviews to famously adding an emphatic “F” to “LGM” on social media, Alonso offers daily evidence that he is not so much trying to seem like a perfect New York baseball star but that he cannot help but be this way.

This time he agreed it was a genuine signal, although its source remained unclear; unable to rule out an alien origin, they jokingly named their discovery LGM-1, for Little Green Man, according to a 2018 report in The Washington Post.