Mon, 19 December 2016
Thanks to http://www.audible.com/minuteearth for sponsoring this video! Reindeer meat could’ve entered North American cuisine and culture, but our turn of the century efforts to develop a reindeer industry were stymied by nature, the beef lobby, and the Great Depression.
Help translate this video: http://www.youtube.com/timedtext_video?v=owNMCTmbG9w&ref=share FYI: We try to leave jargon out of our videos, but if you want to learn more about this topic, here are some keywords to get your googling started: Reindeer - the smaller, (semi-)domesticated version/subspecies of reindeer (Rangifer tarandus tarandus) Credits (and Twitter handles): Image Credits: Rangifer tarandus - Alexandre Buisse Like our videos? Also, say hello on: And find us on itunes: https://goo.gl/sfwS6n If you liked this week’s video, we think you might also like: A virtual guide to reindeer and the people who herd them - http://reindeerherding.org/ The Great Canadian Reindeer Project - http://www.canadashistory.ca/Magazine/Online-Extension/Articles/The-Great-Canadian-Reindeer-Project How one storm killed 61,000 Russian reindeer in 2013: http://www.popsci.com/sea-ice-loss-is-imperiling-reindeer-herders-way-life ___________________________________________ References: Special thanks to Professor Greg Finstad of the University of Alaska Fairbanks for lending his advice, expertise, and patience to the making of this video! Christie, A., & Finstad, G. L. (2009). Reindeer in the “Great Land”: Alaska's Red Meat Industry. Journal of Agricultural & Food Information, 10(4), 354-373. http://dx.doi.org/10.1080/10496500903245651 Daniel, C. R., Cross, A. J., Koebnick, C., & Sinha, R. (2011). Trends in meat consumption in the USA. Public health nutrition, 14(04), 575-583. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3045642/pdf/nihms-253312.pdf Dubner, S. J. (2010, December 9). Beef or Chicken? A Look at U.S. Meat Trends in the Last Century [Blog post]. Retrieved December 1, 2016, from http://freakonomics.com/2010/12/09/beef-or-chicken-a-look-at-u-s-meat-trends-in-the-last-century/ Finstad, G. L. (2016). Personal Communication. Finstad, G. L., Bader, H. R., & Prichard, A. K. (2002). Conflicts between reindeer herding and an expanding caribou herd in Alaska. Rangifer, 22(4), 33-37. https://www.ub.uit.no/baser/septentrio/index.php/rangifer/article/viewFile/1668/1559 Finstad, G. L., Kielland, K. K., & Schneider, W. S. (2006). Reindeer herding in transition: historical and modern day challenges for Alaskan reindeer herders. Nomadic Peoples, 10(2), 31-49. http://reindeer.salrm.uaf.edu/resources/journal_articles/Nomadic_Peoples10(2)31-49.PDF Stern, R. O., Arobio, E. L., Naylor, L. L., & Thomas, W. C. (1980). Eskimos, reindeer, and land. https://scholarworks.alaska.edu/bitstream/handle/11122/1205/Bulletin59.pdf?sequence=1 Willis, R. (2006). A New Game in the North: Alaska Native Reindeer Herding, 1890–1940. Western Historical Quarterly, 37(3), 277-301. http://oit-fhs-pws1.oit.duke.edu/Fellowships/Willis.pdf |
Wed, 7 December 2016
Foraminifera – tiny, single-celled marine life forms – build gorgeous houses that record how much ice there is on the planet. This video was supported by the Heising-Simons Foundation. To learn more, visit https://www.heisingsimons.org/ Special thanks to Professor Lee Kump of Penn State University and Professor Howie Spero of UC-Davis for lending their advice, expertise, and patience to the making of this video! Thanks also to our supporters on https://www.patreon.com/MinuteEarth
___________________________________________ FYI: We try to leave jargon out of our videos, but if you want to learn more about this topic, here are some keywords to get your googling started: foraminifera: a class of single-celled marine organisms – protists, not animals – that live either near the surface ("planktonic foraminifera") or on the seafloor ("benthic foraminifera"). Called forams for short. climate proxy: something that tells us what the climate was like in the past, such as data from the thickness of tree rings, the composition of gases trapped in ancient ice, historical human records of annual bloom times (eg the long-recorded bloom dates of cherry trees in Kyoto, Japan), or the ratios of certain stable isotopes found in shells, corals, or other biogenic substances oxygen-18: a stable isotope of oxygen that contains 8 protons and 10 neutrons, rather than the 8 protons and 8 neutrons of "regular" oxygen (oxygen-16). The ratio of oxygen-18 to oxygen-16 in seawater (and sea shells) can be used as a proxy for the global average temperature ice sheet: a permanent layer of ice covering land, as found in polar regions (and as distinguished from sea ice, like the stuff that floats at the north pole in the Arctic ocean). Combined, the Greenland and Antarctic ice sheets contain more than 99% of the total freshwater ice on Earth. ___________________________________________ If you liked this week’s video, we think you might also like: Orbulina feeding on Artemia Mysterious Web Masters ___________________________________________
Image credits: Cribrohantkenina inflata - Paul Pearson Elphidium macellum, Bulimina and Calcarina hispida by foraminifera.eu Globigerina - Hannes Grobe _________________________________________ Like our videos? Also, say hello on: And find us on itunes: https://goo.gl/sfwS6n REFERENCES Hays, J. D., Imbrie, J., & Shackleton, N. J. (1976). Variations in the Earth's Orbit: Pacemaker of the Ice Ages. Science, 194(4270), 1121-1132. Kendall, C., & McDonnell, J.J. (1998). Fundamentals of Isotope Geochemistry. In Isotope Tracers in Catchment Hydrology (pp. 51-86). Eds: Elsevier Science B.V., Amsterdam. Kucera, M. (2007). Planktonic Foraminifera as Tracers of Past Oceanic Environments. In Developments in Marine Geology, Volume 1, (pp. 213-262). NOAA National Centers for Environmental Information, State of the Climate: Global Analysis for Annual 2015, published online January 2016, retrieved on November 28, 2016 from http://www.ncdc.noaa.gov/sotc/global/201513. Sachs, J., & Steig, E. (2010) Lecture on Isotopes and Air Temperature. University of Washington, Seattle, Washington. Shanahan, T. (2010). Lecture on Oxygen Isotopes. University of Texas, Austin, Texas.
Direct download: ME_100_-_How_This_Sea_Shell_Knows_the_Weather_in_Greenland.mp4
Category:general -- posted at: 12:17pm EDT |