Biologists Find Evidence for Electrical Signaling and Coordinated Behavior in Choanoflagellates
Scientists at the University of Bergen have uncovered a remarkable diversity of behaviors within the rosette-shaped colonies of Salpingoeca rosetta , a rare species of choanoflagellate — the closest relatives of animals. Artwork representing calcium signalling in a rosette colony of the choanoflagellate Salpingoeca rosetta. Image credit: Davis Laundon & Kate Zvorykina, Ella Maru Studio
UAV-Based Mapping Unlocks Secrets of Ancient Mega-Fortress in Southern Georgia
High-resolution UAV-based aerial survey of Dmanisis Gora, a Bronze-Age mega-fortress in Georgia, the South Caucasus, has revealed the extent of the large outer fortification system and settlement, which has few documented parallels in the region. The exceptional size of Dmanisis Gora helps add new dimensions to population aggregation models in Eurasia and beyond. Aerial photo
New Bioluminescent Fungal Species Identified: Mycena crocata
Mycena crocata is a long-known species of fungus frequently reported from Europe and Japan, which was considered non-luminescent until now. Heinzelmann et al. report evidence for bioluminescence in Mycena crocata and show that the genome of this species is fully equipped with the genes associated with fungal bioluminescence. Image credit: Heinzelmann et al., doi: 10.47371/mycosci.2024.03.001.
Atmospheric Lead Pollution Caused Widespread Cognitive Decline in Roman-Era Europe, Study Finds
Researchers have examined three ice core records to identify lead pollution levels in the Arctic between 500 BCE through 600 CE. Lead isotopes allowed the authors to identify mining and smelting operations throughout Europe as the likely source of pollution during this period. Advanced computer modeling of atmospheric movement then produced maps of atmospheric lead
Study: GD-1 Stellar Stream’s Distinctive Features Caused by Self-Interacting Dark Matter Subhalo
A core-collapsing self-interacting dark matter subhalo is responsible for the peculiar spur and gap features observed in GD-1, a stellar stream within the Galactic halo of the Milky Way, according to a new study led by University of California, Riverside astronomers. GD-1 exhibits spur and gap structures that may result from a close encounter with
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