Results 61 to 70 of about 3,280 (273)

Learning to ‘be’ an activist: Exploring the relationship between activism and informal education in a youth activism group case study

British Educational Research Journal, EarlyView.
Abstract Young people in the United States (and beyond) access spaces for activism in varied ways, including the out‐of‐school time sector, where youth activism (YA) groups draw on informal learning pedagogies to engage young people in collective action.
Laura Weiner
wiley   +1 more source

Continental weathering following a Cryogenian glaciation: evidence from calcium and magnesium isotopes

, 2014
A marked ocean acidification event and elevated atmospheric carbon dioxide concentrations following the extreme environmental conditions of the younger Cryogenian glaciation have been inferred from boron isotope measurements.
Prave, Anthony R., von Strandmann, Philip A. E. Pogge, Pogge von Strandmann, Philip A.E., Elliott, T., Fallick, A.E., Pogge von Strandmann, P.A.E., Elliott, Tim, Kasemann, Simone A., Hoffmann, Karl-Heinz, Prave, A.R., Hoffmann, K.-H., Fallick, Anthony E., Kasemann, S.A.   +12 more
core   +1 more source

Analysis of a Precambrian resonance‐stabilized day length

Geophysical Research Letters, 2016
During the Precambrian era, Earth's decelerating rotation would have passed a 21 h period that would have been resonant with the semidiurnal atmospheric thermal tide.
Benjamin C. Bartlett, David J. Stevenson
doaj   +1 more source

δ13Corg perturbations preserved by the interglacial Datangpo Formation in South China with implications for stratigraphic correlation and carbon cycle

China Geology, 2023
: Palaeoclimatic and palaeoenvironmental reconstructions of the Cryogenian Period have attracted attention in relation to the debated “Snowball Earth ” hypothesis and the early evolution of metazoan life.
Xian-yin An, Yu-jie Zhang, Li Tian, Shi-lei Liu, Qi-yu Wang, Yong Du, Hu-yue Song, Jun Hu   +7 more
doaj   +1 more source

‘Sometimes, I would look at my books and cry because I felt like I was left behind’: Understanding the learning of Indigenous girls during the COVID‐19 pandemic in the districts of Chongwe and Solwezi in Zambia

British Educational Research Journal, EarlyView.
Abstract Grounded in principles of epistemic justice, this article examines the educational impacts of Zambia's COVID‐19 school closures on Indigenous girls in two districts and highlights community‐led pathways for resilience. National responses prioritised broadcast and digital delivery but presupposed access to electricity, digital devices and ...
Marcellus Forh Mbah, Leigh Jarvis, Ane Turner Johnson, Chidi Ezegwu, Priscillah Nsama, Austine Nakanga   +5 more
wiley   +1 more source

New constraints on equatorial temperatures during a Late Neoproterozoic snowball Earth glaciation [PDF]

, 2014
Intense glaciation during the end of Cryogenian time (∼635 million years ago) marks the coldest climate state in Earth history – a time when glacial deposits accumulated at low, tropical paleolatitudes.
Ewing, Ryan C, Maloof, Adam C, Lamb, Michael P, Lamb, Michael P., Maloof, Adam C., Fischer, Woodward W., Eisenman, Ian, Fischer, Woodward W, Poppick, Laura, Ewing, Ryan C.   +9 more
core   +1 more source

A Decrease to Low Carbonate Clumped Isotope Temperatures in Cryogenian Strata

AGU Advances, 2020
Preglacial and synglacial low‐latitude carbonate sediments of the Elbobreen Formation, NE Svalbard, preserve facies changes associated with low‐latitude glacial advance in Cryogenian “Snowball Earth” episodes (717–635 Ma).
T. J. Mackey, A. B. Jost, J. R. Creveling, K. D. Bergmann   +3 more
doaj   +1 more source

Beyond salaries: Teachers' experiences of navigating early years education amid economic instability in Türkiye

British Educational Research Journal, EarlyView.
Abstract The intersection of economic conditions and early years education has long been debated, particularly where financial constraints shape educational practice and professional realities. Türkiye, characterised by high inflation and structural vulnerabilities in purchasing power parity, provides a critical context for examining how economic ...
Ebru Aydın, Şerif Yüksel
wiley   +1 more source

Ultraviolet protection on a snowball Earth [PDF]

, 2001
Habitats in the Antarctic provide an insight into habitats available on snowball earth. Physical UV protection on snowball earth would have been dominated by the manifestations of ice and snow in different habitats.
Cockell, C. S., Wynn-Williams, D. D., Horneck, G.   +2 more
core  

Origins and assessment of snowball Earth hypotheses [PDF]

, 2007
Records of Precambrian glaciation onwards from the late nineteenth century led to the concept of one or more major ice ages. This concept was becoming well advanced by the mid 1930s, particularly through the compilation of Kulling in 1934.
Harland, W. B.
core   +2 more sources