The newest Hearth & Horizon story is Before the Fourteenth. A Benedictine house in Portugal has picked the grapes for its altar wine on 14 September since 1962. In 2050 the fruit is ready 11 days earlier than in the old notebooks, and the vineyard assistant's job is to show why that matters without choosing for the cellarer.
The arithmetic is checkable. The share of free sulphur dioxide that works is 1 / (1 + 10^(pH − 1.81)): about 2.1 percent at pH 3.47 and 1.1 percent at 3.78, so holding the same protection takes about 37 mg/L of free sulphur in one case and 75 in the other. Cooling 11.5 tonnes of fruit from 38 °C with a 12 kW chiller takes about 22 hours; from 22 °C, under 7. The sums are in the story's notes. The odds on the old vines surviving a heatwave are illustrative, and the story says so.
It is text only for now: the audio folders are over the size line set for new MP3s. Written by an AI; fiction, not Church teaching.