Results 51 to 60 of about 3,280 (273)
Nature Communications, 2023 Based on geochemical and paleontological data, this study shows that habitable open-oceans extended to mid-latitude coastal oceans during the waning stage of the Marinoan snowball Earth, offering refugia for benthic photosynthetic ...
Huyue Song +11 more
doaj +1 more source
Re-Os geochronology and coupled Os-Sr isotope constraints on the Sturtian snowball Earth. [PDF]
Proc Natl Acad Sci U S A, 2014 After nearly a billion years with no evidence for glaciation, ice advanced to equatorial latitudes at least twice between 717 and 635 Mya. Although the initiation mechanism of these Neoproterozoic Snowball Earth events has remained a mystery, the broad ...
Rooney AD +5 more
europepmc +2 more sources
Australian Journal of Social Issues, EarlyView.ABSTRACT As modes of activism rapidly evolve, activists—both seasoned and emerging—must increasingly navigate a hybrid terrain of both digital and non‐digital engagement. This paper draws on the personal narratives of 16 nascent activists based in Australia to explore how they develop competencies related to digital storytelling, which is critical to ...
Garth Stahl +5 more
wiley +1 more source
I. Glaciagenic and Related Strata of the Neoproterozoic Kingston Peak Formation in the Panamint Range, Death Valley Region, California. II. The Basal Ediacaran Noonday Formation, Eastern California, and Implications for Laurentian Equivalents. III. Rifting of Southwest Laurentia During the Sturtian-Marinoan Interglacial: The Argenta Orogeny [PDF]
, 2009 I. Glacigenic deposits in the Death Valley region occur within the Neoproterozoic Kingston Peak Formation. In the Panamint Range, immediately west of Death Valley, these strata are ≥1000 m thick and are continuously exposed for nearly 100 km along the ...
Petterson, Ryan
core +1 more source
Activism as education in and through the youth climate justice movement
British Educational Research Journal, EarlyView.Abstract Young people worldwide are increasingly participating in a global movement for climate justice, yet to date, little research has examined how youth climate justice activists conceive of and experience activism as education. The present study used in‐depth, semi‐structured interviews with 16 US climate justice activists (aged 15–17) to address ...
Carlie D. Trott
wiley +1 more source
Geobiology of "Snowball Earth" deposits of Antelope Island
, 2022 Antelope Island on Great Salt Lake provides an excellent opportunity to look at one of the world’s great geobiological records—the “Snowball Earth.” Snowball Earth refers to a unique time in Earth history before the dawn of skeletonized animals where ...
Dehler, Carol, Shapiro, Russell
core +1 more source
British Educational Research Journal, EarlyView.Abstract By skipping school for their cause, young climate strikers repeatedly demonstrated their priorities in 2019 and 2020. They regularly chose to sacrifice a day of their formal education in favour of collective action. This study asks what we can learn from the reflections of former youth strikers.
Loz J. Hennessy
wiley +1 more source
Molecular and isotopic signatures of life surrounding the Neoproterozoic Snowball Earth events [PDF]
, 2017 Life on Earth transitioned from being mainly dominated by bacteria prior to the Cryogenian Snowball Earth events (717a 635 Ma) to an ecosystem in which biologically more complex eukaryotes (e.g.
Van Maldegem, Lennart Martijn
core
British Educational Research Journal, EarlyView.Abstract With growing attention to student agency in academic and policy discourse, international education has become a prominent context for examining how students navigate new cultural, academic, linguistic and social environments. However, much of this discussion attributes student agency to the ‘international’ aspect, while overlooking the ...
Soyoung Lee
wiley +1 more source
Aftermath of a snowball Earth [PDF]
Geochemistry, Geophysics, Geosystems, 2003 Using a simple 3‐box model of the ocean‐atmosphere system, we simulate the cycling of carbon and strontium in the aftermath of a global glaciation. Model simulations include the delivery of alkalinity to seawater from intense carbonate and silicate weathering under high pCO2 conditions as well as ocean mixing, air‐sea gas exchange, and biological ...
John A. Higgins, Daniel P. Schrag
openaire +1 more source