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Notícia OVGA 21-01-2021 This drawing shows how the dinosaur Psittacosaurus may have used its cloacal vent (aka butthole) for signaling during courtship. (Image: © Bob Nicholls/Paleocreations.com 2020)   The first dinosaur butthole ever discovered is shedding light where the sun don't shine. The discovery reveals how dinosaurs used this multipurpose opening — scientifically known as a cloacal vent — for pooping, peeing, breeding and...
Notícia OVGA 19-01-2021 Lava flows after an eruption of Mount Semeru in Lumajang, East Java. Semeru is one of Indonesia’s most active volcanoes Photograph: Agus Harianto/AFP/Getty Images   Volcanoes in Java continue to show worrying signs, with authorities closely monitoring seismic activity as they spew lava and ash many kilometres into the atmosphere. At 3,676 metres (12,060 feet), Mount Semeru in East Java is one of the highest volcanoes in Indonesia....
Notícia OVGA 13-01-2021       Source: Açoriano Oriental, 13 janeiro 2021
Notícia OVGA 11-01-2021 A fossil of Archaeopteryx, the oldest bird on record (Image: © James L. Amos)   The ability to precisely date, or identify the age of an object, can teach us when Earth formed, help reveal past climates and tell us how early humans lived. So how do scientists do it? Radiocarbon dating is the most common method by far, according to experts. This method involves measuring quantities of carbon-14, a radioactive carbon...