Research shows that an excess amount of some minerals contained in non-cotetic rocks may originate in the feeder conduits along which the magmas are travelling from the deep-seated staging chambers towards Earth's surface.
Scientists from the University of Plymouth and the University of Copenhagen led research tracing how the two major human migrations recorded in Holocene Europe -- the northwestward movement of Anatolian farmer populations during the Neolithic and the westward movement of Yamnaya steppe peoples during the Bronze Age -- unfolded.
Dropping Mentos® candies into a bottle of soda causes a foamy jet to erupt. Although science fair exhibitors can tell you that this geyser results from rapid degassing of the beverage induced by the candies, the precise means by which bubbles form hasn't been well characterized. Now, researchers reporting in ACS' Journal of Chemical Education used experiments in the lab and at various altitudes to probe the mechanism of bubble nucleation.
An international team of researchers led by geoscientists from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI) have now provided a new and unprecedented perspective on the climate history of Antarctica.
Environmental features perceived as motivating for outdoor mobility and levels of physical activity were investigated alongside the neighbourhood types in which the older adults lived. Based on these findings, it could be seen that environmental features associated with higher levels of physical activity differed between neighbourhood types. Differences existed especially between densely populated and sparsely populated areas.
Tropical forests are heavily fragmented as they are cleared for agricultural expansion and logging. Forest fragmentation leads to declines in carbon storage beyond just those trees that are cleared -- the remaining forest at the edge of each clearing experiences environmental alterations such as increased sunlight and decreased soil moisture that can impact growing conditions for trees. These 'edge effects' describe habitat disturbances that can lead to decreased tree growth and increased mortality, which change forest structure over time.
Global warming has caused the total area of more than 600 Greater Caucasus glaciers to drop by approximately 16%, according to an international research team that includes Stanislav Kutuzov, geographer from HSE University. Glaciers without rock debris coverage have decreased more than those with debris coverage. https://www.the-cryosphere.net/14/585/2020/
As cities physically expanded worldwide between 1970 and 2010, the population in those cities became less dense, according to a study led by a Texas A&M university professor.
With over 300,000 COVID-19 cases across the globe, including recent cases in Syria and the Gaza Strip, the data continues to demonstrate how the disease has no borders. A new Dartmouth-led commentary in the International Journal for Equity in Health highlights how people affected by humanitarian crises are especially vulnerable to COVID-19.
Researchers have used artificial intelligence to detect Vietnam War-era bomb craters in Cambodia from satellite images - with the hope that it can help find unexploded bombs. The new method increased true bomb crater detection by more than 160 percent over standard methods.