Showing 20 articles starting at article 1621
Categories: Archaeology: General, Environmental: Ecosystems
Published Central Texas salamanders, including newly identified species, at risk of extinction
(via sciencedaily.com) Biologists have discovered three new species of groundwater salamander in Central Texas, including one living west of Austin that they say is critically endangered. They also determined that an already known salamander species near Georgetown is much more endangered than previously thought. They warn that more severe droughts caused by climate change and increasing water use in Central Texas have left groundwater salamanders 'highly vulnerable to extinction.'
Published Volcanoes fed by 'mush' reservoirs rather than molten magma chambers
(via sciencedaily.com) Volcanoes are not fed by molten magma formed in large chambers finds a new study, overturning classic ideas about volcanic eruptions.
Published Evolution: South Africa's hominin record is a fair-weather friend
(via sciencedaily.com) The fossil record of early hominins in South Africa is biased towards periods of drier climate, suggests a study of cave deposits. This finding suggests there are gaps in the fossil record, potentially obscuring evolutionary patterns and affecting our understanding of both the habitats and dietary behaviors of early hominins in this region. South Africa's highest concentration of early hominin fossils comes from the 'Cradle of Humankind' caves northwest of Johannesburg.
Published A Mexican cavefish with a scarred heart
(via sciencedaily.com) Scientists are studying a guppy-sized, blind, translucent fish that lives in the cave systems of northern Mexico to figure out why some animals can regenerate their hearts, while others just scar.
Published Scientists find stable sea levels during last interglacial
(via sciencedaily.com) The magnitude and trajectory of sea-level change during the Last Interglacial, more specifically Marine Isotope Stage (MIS) 5e, is uncertain. To date the consensus view has been that sea-level may have been six to nine meters above present sea level. However, scientists are now questioning if those sea level fluctuations are accurate.
Published Cold climates contributed to the extinction of the Neanderthals
(via sciencedaily.com) Original source Climate change may have played a more important role in the extinction of Neanderthals than previously believed, according to a new study.
Published When cozying up with would-be predators, cleaner shrimp follow a dependable script
(via sciencedaily.com) Original source It's a mystery how cleaner shrimp partner with would-be fish predators -- sometimes even climbing in their mouths -- without getting eaten. A new study reveals how the shrimp convinces fish not to eat them, and the fish conveys that it's a friend and not a foe.