Top Vídeos
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Within sight of the famous New York skyline, you might see something unexpected—whales. Vast schools of menhaden baitfish swirl in the New York Bight, just a few short miles from downtown Manhattan, luring numerous whale species to feed.. Although breathtaking sights like these were unheard of just a decade ago in the waters off New York City, scientists say they signal a wildlife resurgence underway. Howard Rosenbaum, senior scientist for the Wildlife Conservation Society, explains why the whales have returned and how researchers are tracking the phenomenon in real time.
NOTE: The minke whale photo featured in this video is the dwarf minke whale, a subspecies not found in New York waters.
Produced by Luke Groskin
Music by Audio Network.com
Additional Footage and Stills Provided by
Timothy Del Grosso, The Wildlife Conservation Society,
Woods Hole Oceanographic Institution,
NOAA, Christan Khan, Pond5, Shutterstock,
Certain whale video collected under NMFS MMPA/ESA Permit No. 14809
Right Whale Footage courtesy of NOAA Fisheries and Florida Fish and Wildlife Conservation Commission
under NMFS ESA/MMPA Research/Enhancement Permit #0932-1489-9
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For more about this work head to Dr. Lydia Bourouiba's Webstie : http://lbourouiba.mit.edu
Although we all know that sneezes and coughs transmit infections, little research had been done to model how they work. To address this knowledge gap, Dr. Lydia Bourouiba and Dr. John Bush of MIT's Applied Mathematics Lab used high speed cameras and fluid mechanics to reveal why we've grossly underestimated the role of gas clouds in these violent expirations.
Produced by Luke Groskin
Music by Audio Network
Additional Video and Stills by
Lydia Bourouiba
John Bush
Shutterstock
Prelinger Archives
Meet a set of giant pumpkins--find out how to grow them and go to a weigh off to see growers compete for the heftiest pumpkin title.
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 part of Doug Emlen’s biology lab at the University of Montana in Missoula, Jillian del Sol was no stranger to bug battles. Year after year, study after study, species after species, students in Emlen’s lab have revealed the dramatic effects of sexual selection on male biological weaponry. So when she travel to East Asia to witness the tree trunk battles of the rhino beetles as part of her Ph.D. research, she came prepared to document the ecological conditions that influence chitinous combat. To her surprise, the successful male beetles didn’t just claim their prize after ousting their foes. Instead, they began to sing- or rather chirp and chitter at the females. This acoustic courtship continued even as they mated. Clearly, there was more to this mating system than just an escalating arms race between males. Now equipped with 150 beetles from field sites from Japan, del Sol aims to record these acoustic mating rituals in detail to hopefully discover why this bruiser bug suddenly turns from fighter to lover.
Produced by Luke Groskin
Music by Jeramiah Jones, Audio Network, and Pond5
Additional Footage and Stills Provided by Jillian Delsol
Pond5, Louis Hollis (CC BY 2.0), Carol Burch-Brown (CC BY 2.0),
Flora Lichtman, Glacier National Park, (CC BY 2.0), Ian A. Nelson (CC BY 2.0)
Special Thanks to Annie Nero
Tips on mushroom hunting from the president of the Mycological Society of America.
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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.
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/
Think oysters are good on the half shell? They may be even better whole. Oysters can restore marine habitats by cleaning water, creating homes for other sea life and preventing coastal erosion. But oyster populations around the world have declined, experts say. Find out how scientists in New York are working to replenish oyster populations in the waters around the city.
An elephant shrew is neither an elephant nor a shrew and has a manatee for a close relative. It's more like a mix between a miniature antelope and anteater. Researchers recently discovered a new species of elephant-shrew in Tanzania
How do you capture an asteroid? What does rap music have to do with science? SciFri explores these questions, and more, on this week's' show.
On this video I'll show you some funny stuffs can made from origami, really fun ^^, don't forget to like, share and comment !
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Music :
Italian Morning by Twin Musicom is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Artist: http://www.twinmusicom.org/ If at any point in my tutorials you feel I'm going too fast, try using YouTube's slow motion feature. To do this, press the little gear icon at the bottom right of the video screen, click on 'normal' and then click on the speed .50 or .25 .
Portant des rameaux, ils allaient au devant du Seigneur et l'acclamaient:
Hosanna, qu'il soit beni celui qui vient au nom du Seigneur!
They took palm branches and went out to meet the Lord, shouting,
"Hosanna! Blessed is the one who comes in the name of the Lord!" (John 12,13)
Chant for the Palm Sunday.
Nothing can ever come between us and the love of God, the love of God revealed to us in Christ Jesus.
Text: Rm 8, 38-39
Music: Taizé
Video by SRF Schweizer Radio und Fernsehen
European meeting in Basel, prayer in Basel Munster
Molitva u crkvi Uznesenja BDM na Širokom Brijegu, 4. lipnja 2010.
Prayer in the church of Assumption of Our Lady in Široki Brijeg, 4 June 2010.
Brother Alois, Prior of Taizé, speaks during the Europan Meeting in Wroclaw, and announces that the 43rd European Meeting will be held in Torino, from 28 December 2020 to 1 January 2021.
#taizewroclaw
Alleluia 11, composed by J. Berthier, sung at the Evening prayer at Palexpo, during the European meeting organized by the Taizé Community, in Geneve 28 December 2007 - 1 January 2008.
