Top Vídeos
The Rockaways, a Queens, N.Y. neighborhood, is still recovering from Sandy. Debris from fires lingers on the streets, and buildings torn apart by the storm are crumbling on the beach. But at least for those with restored heat and power (7,000 customers in the area are still without power), there is yet another worry: mold. Peter Corless, a community organizer in the Rockaways, gives us a tour of the neighborhood, while Joan Bennett, a mycologist whose house molded after Katrina flooding, describes the species of fungi she found in her own home after that hurricane and in New Jersey homes post-Sandy.
Why do your fingers get pruney after a swim? Only a handful of researchers, including Einar Wilder-Smith, Mark Changizi, and Tom Smulders, have looked into the phenomenon. Publishing in Biology Letters, Smulders lends a hand to the hypothesis, set forth by Changizi and colleagues, that finger wrinkles improve our grip of wet objects.
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As a choreographer who often collaborates with dancers with disabilities, Merry Lynn Morris has long thought that traditional manual and power wheelchair designs were constraining. Her work in integrative dance, along with her experience growing up with a father who relied on a wheelchair, inspired her to invent a power wheelchair designed for artistic expression. Equipped with omnidirectional movement, a rotating seat, and a hands-free control, the chair enables dancers to explore new movement techniques, and may one day provide greater mobility in everyday life, too.
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Up and down the West coast of the U.S., bees are leaving their hives, flying around at night and then suddenly dropping dead. Learn all about this parasitic horror that quietly zombifies these insects and how you can become a real-life zombee hunter.
Biology graduate student Tom McDonagh is taking shadow puppetry to the next level. One of his latest productions is based on the (true) story of an American doctor and French inventor who took to the skies in a hydrogen balloon and made the first trip -- by air -- across the English Channel. McDonagh, whose Ph.D. project at Rockefeller University has centered on building a microscope, is also experimenting with shadow puppet production -- from laser cut puppets to 3D shadows. McDonagh and puppeteers Jo Jo Hristova, Arlee Chadwick and Emma Wiseman will be performing several of his pieces at Puppet Festival rEvolution on August 6th, 2013 in Swarthmore, PA.
In her new book, Bones Books and Bell Jars, physician and photographer Andrea Baldeck documents the collection of medical texts, instruments, and specimens at Philadelphia's Mütter Museum.
Bacteria and viruses hitch a ride inside droplets of all kinds—sneezes, raindrops, toilet splatter. By reviewing footage of different types of drops, applied mathematician Lydia Bourouiba records and measures where they disperse in order to better understand how diseases spread. Watch how Bourouiba designs tests—some inescapably humorous and awkward—to study infectious disease transmission.
Publications References:
Bourouiba, L. (2016) A Sneeze. New England Journal of Medicine. 357(8):e15.
Wang, Y. and Bourouiba, L. (2016) Drop impact on small surfaces: thickness and velocity profiles of the expanding sheet in the air. Journal of Fluid Mechanics. 814:510-534.
Gilet, T. and Bourouiba, L. (2015) Fluid fragmentation shapes rain-induced foliar disease transmission. Journal of the Royal Society Interface. 12:20141092.
Gilet, T. and Bourouiba, L. (2014) Rain-induced ejection of pathogens from leaves: revisiting the mechanism of splash-on-film using high-speed visualization. Integrative and Comparative Biology. 54:974–984.
Bourouiba, L., Dehandschoewercker, E., and Bush, J. W. M. (2014) Violent respiratory events: on coughing and sneezing. Journal of Fluid Mechanics. 745: 537-563.
Scharfman, B. E., Techet, A. H., Bush, J. W. M. and Bourouiba, L. (2016) Visualization of sneeze ejecta: steps of fluid fragmentation leading to respiratory droplets. Experiments in Fluids. 57:24--1-9
A film by Science Friday
Produced in collaboration with the Howard Hughes Medical Institute
Produced and Directed by Emily V. Driscoll and Luke Groskin
Filmed by Luke Groskin
Editing and Animations by Jason Drakeford
Music by Audio Network
Additional Photos and Video by
Lydia Bourouiba, Yongji Wang, Tristan Gilet, Sophie Lejeune, Claire Lu, and Eline Dehandschoewercker
Alamy, Pond5, Shutterstock
Project Advisors:
Laura A. Helft, Laura Bonetta, Dennis W.C. Liu and Sean B. Carroll - Howard Hughes Medical Institute
Special Thanks to:
Lydia Bourouiba, Christian Skotte, Danielle Dana, Ariel Zych, Jennfier Fenwick, Timothee Jamin, Stephane Poulain, and Maxime Inizan
To learn more about her research you can visit https://lbourouiba.mit.edu/
Ice can be hard to get a handle on, literally and figuratively. It can be cloudy or clear, as hard as concrete or as soft as a snowflake. Ice experts Erland Schulson, head of the Ice Research Lab at Dartmouth College, and Shintaro Okamoto, founder of Okamoto Studio in Queens, New York, have staked their livelihoods on the slippery material. We asked them what fascinates them about frozen water. (Originally published Jan 27, 2012)
Science Friday salutes a great science teacher. "Office hours are some of my favorite hours of the week," says professor Tom Carlson, a medical doctor, ethnobotanist and instructor of 1700 students annually at the University of California, Berkeley. One of Carlson's former students, SciFri associate senior producer Christopher Intagliata, told us that Carlson's class was the reason he got into science. Listen here: http://www.sciencefriday.com/s....egment/05/31/2013/te
For honey bees, making is a new queens is a simple as adding royal jelly, a unique protein rich secretion, to the cell of a growing larvae. This fairly well studied addition causes a cascade of physiological changes in the growing larvae and voila! A queen is born. However, what causes a baby bumblebee (the fuzzier and more weather-hardy cousins to honey bees) to become royalty remains a mystery. They don’t produce royal jelly but they produce a unique barf for their young. Enter entomologist Hollis Woodard and her students at UC Riverside who hope that by understanding how queens are created, they can mitigate on-going extinction crises in bumblebees species. Woodard and company begin by heading up to San Bernardino mountains outside Los Angeles. Here, the researchers collect emerging queens as they buzz around the blooming Manzanita shrubs. These queens are brought back to the lab, where the establish their own (see through) honeypots. Lavished with food by the lab members, the queens lay dozens of larvae which become daughter drones. These drones are then “milked” for their barf which is analyzed for its chemical properties. Future larvae are hand fed the analyzed barf in various quantities and intervals to determine what factors lead to the generation of queen bees.
Produced by Luke Groskin
Filmed by Christian Baker
Audio Recording by Christopher Intagliata
Music by Audio Network
Additional Footage Provided by Woodard Lab, Creative Commons Media (C.C. BY 2.0),
Cees Van Hengstum (C.C. BY 2.0), Alex Murphy (C.C. BY 2.0),
Blue Line Apiary (C.C. BY 2.0), Pond5
From 2011: Using the Swedish Solar Telescope, a ground-based observatory, Goran Scharmer and colleagues probe the penumbra--that's the stringy structure around the perimeter of the dark part of the sunspot. The images give scientists new insight into how that structure forms.
Researchers are on a quest to find the lake trout that remain in Lake Michigan.
Watch budding engineers compete for best bot at the FIRST robotics New York regional. Plus, a special appearance by Dean Kamen
This week, John i s talking about one of his least favorite novels, The Lord of the Flies by William Golding. Lord of the Flies is a novel of ideas, and John doesn't agree with the central idea of the novel, which diminished his enjoyment of the book. The central idea of the book is that everyone has evil in their hearts. Which we don't necessarily agree with. That said, it's a good read, and worth reading.
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The architecture of the social internet itself tells us not to be patient - to load more tweets, to hit refresh for new posts, and to click the top search results. But just because information is new, or algorithmically determined to be most relevant to you, doesn't necessarily mean it's the best or most accurate. So today we're going to teach you some tips to exercise a little more click restraint on the Internet.
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Today Shini explains the law of conservation, beginning with simple, steady-state systems. We’ll discuss conversion and yield, accumulation, and how generation and consumption can affect how much accumulation there is in a system.
This episode is sponsored by CuriosityStream: http://curiositystream.com/crashcourse
Crash Course Engineering is produced in association with PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO
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RESOURCES:
http://www.keenovens.com/artic....les/steel-furnance.h
http://www.madehow.com/Volume-....1/Stainless-Steel.ht
https://www.nps.gov/stli/faqs.htm
https://www.nps.gov/stli/learn..../historyculture/plac
https://www.scientificamerican.....com/article/why-doe
https://wonderopolis.org/wonde....r/why-do-some-things
https://www.engineersedge.com/....thermodynamics/stead
https://www.britannica.com/sci....ence/conservation-la
http://www.keenovens.com/artic....les/steel-furnance.h
http://discoverykids.com/artic....les/how-is-steel-mad
https://www.britannica.com/tec....hnology/steel/Histor
http://www.explainthatstuff.com/ironsteel.html
https://agt.si.edu/cultural_hi....story/turkey/bronze-
https://www.britannica.com/tec....hnology/Bessemer-pro
https://www.britannica.com/bio....graphy/Henry-Besseme
https://en.wikibooks.org/wiki/....Introduction_to_Chem
https://en.wikibooks.org/wiki/....Introduction_to_Chem
https://www.foodnavigator-asia.....com/Article/2012/05
http://www.industryweek.com/co....mpanies-amp-executiv
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Somos una comunidad especializada en rescatar material del recuerdo.
Puedes disfrutar nuestros contenidos en:
Nuestra Web: http://www.generacionretro.net
Nuestro Twitter: https://twitter.com/gretrocool
Nuestro Facebook: http://www.facebook.com/generacionretro.latino/
Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use
