[upper image: Jon Sullivan (here)]
[upper image: Jon Sullivan (here)]
Christmas in August
Nikon winner Donna Stolz is ready for Christmas — on a microscopic level, at least. This is a collage of mammalian cells, stained to reveal various proteins and organelles and then assembled into a wreath.
Found on livescience.
A demonstration of the VeinViewer - a device which allows you to see through the skin. The VeinViewer uses near-infrared light to detect vessels and blood up to 10mm beneath the surface, and projects a picture onto the skin to reveal vessel structure and blood flow in real time.
Clip taken from the 2013 Royal Institution CHRISTMAS LECTURES: Life Fantastic Lecture 1 - Where do I come from?
The Er Wang Dong underground cave system in Southwest China is so big, it has its own weather system. Explored in its entirety just last year, it has its own vegetation, white water rapids, and yes, clouds.
Read more: http://bit.ly/1oPPeKe
If there is one picture i post on here that i really wish y’all would reblog the fuck out of, it’s this one.
PLEASE. It could save many people that are under the ridiculous police state going on right now in Ferguson Missouri. Those people need our help.
New Species of Venomous Jellies Discovered in Australia
By Megan Gannon, News Editor, Live Science | August 13, 2014
Two new species of jellyfish (Keesingia gigas and Malo bella) have been discovered off the coast of Western Australia. One is surprisingly large. The other is tiny. Both are extremely venomous.
These two newfound creatures are thought to pack painful stings that cause Irukandji syndrome, a constellation of symptoms that includes lower back pain, vomiting, difficulty breathing, cramps and spasms. Though Irukandji syndrome usually isn’t life threatening, two people who were stung in the Great Barrier Reef in 2002 died from severe Irukandji-related hypertension.
Research scientist Lisa-ann Gershwin, who is director of the Australian Marine Stinger Advisory Services, described the new box jellyfish, or cubozoans, last month in the Records of the Western Australian Museum [available as a PDF].
Gershwin said that in all of the photos the jellyfish did not appear to have tentacles and that the specimen was also captured without them.
“Jellyfish always have tentacles … that’s how they catch their food,” she said. “The tentacles are where they concentrate their stinging cells. … Some of the people working with it through the years actually got stung by it and experienced rather distressing Irukandji syndrome.”
IMAGES:  An example of the Keesingia gigas jellyfish. Photograph: John Totterdell/MIRG Australia. Via The Guardian  Keesingia gigas in bloom of sea tomatoes, Crambione mastigophora. Image credit: John Totterdell / MIRG Australia.. Via Sci-News  That’s not a plastic bag. That’s a newly described species of box jellyfish, Keesingia gigas. Image Credit: Lisa-ann Gershwin
What does Ebola actually do?
By Kelly Servick, 13 August 2014 || Science/AAAS | News
Behind the unprecedented Ebola outbreak in West Africa lies a species with an incredible power to overtake its host.
Zaire ebolavirus and the family of filoviruses to which it belongs owe their virulence to mechanisms that first disarm the immune response and then dismantle the vascular system.
The virus progresses so quickly that researchers have struggled to tease out the precise sequence of events, particularly in the midst of an outbreak. Much is still unknown, including the role of some of the seven proteins that the virus’s RNA makes by hijacking the machinery of host cells and the type of immune response necessary to defeat the virus before it spreads throughout the body. But researchers can test how the live virus attacks different cells in culture and can observe the disease’s progression in nonhuman primates—a nearly identical model to humans.
Continue reading to find out some of the basic things we understand about how Ebola and humans interact …
IMAGE: The Ebola virus THOMAS W. GEISBERT
FROM MEGABYTE TO YOTTABYTE
Each new section represents a 10x increase, except for the last (zettabytes to yottabytes), which is 1000x.
This infographic looks into analog, digital and organic storage capacities like sperm or all words ever spoken.
The Journal Science Just Published a Paper with 30780 Authors
Andrew J. Westphal, with 65 other listed authors and 30714 Stardust@home citizen scientists: “Evidence for interstellar origin of seven dust particles collected by the Stardust spacecraft”. Science 15 August 2014: Vol. 345 no. 6198 pp. 786-791
Seven grains of interstellar dust reveal their secrets [Science/AAAS]
Eight years after a NASA mission brought them back to Earth, seven grains of interstellar dust keep giving scientists fresh puzzles to ponder.
Here’s the Editor’s Summary in Science:
Can you spot a speck of space dust?
NASA’s Stardust spacecraft has been collecting cosmic dust: Aerogel tiles and aluminum foil sat for nearly 200 days in the interstellar dust stream before returning to Earth.
Citizen scientists identified most of the 71 tracks where particles were caught in the aerogel, and scanning electron microscopy revealed 25 craterlike features where particles punched through the foil.
By performing trajectory and composition analysis, Westphal et al. report that seven of the particles may have an interstellar origin. These dust particles have surprisingly diverse mineral content and structure as compared with models of interstellar dust based on previous astronomical observations.
Probing the solar system’s prenatal history
Science 8 August 2014
This is an overview and intro to Maria Lugaro et al, “Stellar origin of the 182Hf cosmochronometer and the presolar history of solar system matter” in Science 8 August 2014: Vol. 345 no. 6197 pp. 650-653 [not open access]
IMAGE CREDIT: (SUPERNOVA) THINKSTOCK; (AGB STAR) THINKSTOCK; (SOLAR SYSTEM) DAVID SZABO/THINKSTOCK