Good morning.
Saturday in Whitewater will be cloudy with a high of 42. Sunrise is 7:24 and sunset is 4:27 for 9 hours, 3 minutes of daytime. The moon is a waxing crescent with 49 percent of its visible disk illuminated.
On this day in 1966, the Cave of Swallows, the largest known cave shaft in the world, is discovered in Aquismón, San Luis Potosí, Mexico:
“Temperatures in the cave are low. Vegetation grows thickly at the mouth, The cave floor is covered with a thick layer of debris and guano. The fungi in the guano may cause histoplasmosis in humans. The cave floor and walls are inhabited by millipedes, scorpions, insects, snakes and birds. From the floor at the bottom of the main shaft, there is a series of narrow pits known as “The Crevice”, totaling some 140 m (460 ft), which brings the total depth of the cave to 515 m (1,690 ft).”
Scientists have identified a second type of lion roar:
A new study has found African lions produce not one, but two distinct types of roars – a discovery set to transform wildlife monitoring and conservation efforts.
Researchers at the University of Exeter have identified a previously unclassified “intermediary roar” alongside the famous full-throated roar. The study, published in Ecology and Evolution, used artificial intelligence to automatically differentiate between lion roars for the first time. This new approach had a 95.4 percent accuracy and significantly reduced human bias to improve the identification of individual lions.
Lead author Jonathan Growcott from the University of Exeter said: “Lion roars are not just iconic – they are unique signatures that can be used to estimate population sizes and monitor individual animals. Until now, identifying these roars relied heavily on expert judgment, introducing potential human bias. Our new approach using AI promises more accurate and less subjective monitoring, which is crucial for conservationists working to protect dwindling lion populations.”
See Tom Seymour, Scientists discover new type of lion roar, which could help protect the iconic big cats, University of Exeter News, November 21, 2025
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