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The Cool Science Stuff Thread

http://static.nautil.us/3444_758be1f9f7a7efac938ed8bd97c0e1cb.png

Scientists have seen the future and it is “grolar bears.”

In the last 40 years, the Arctic has warmed by about 3.5 degrees Fahrenheit, more than twice the overall global rise in that same period. Already grizzly bears are tromping into polar bear territory while fish like cod and salmon are leaving their historic haunts to follow warming waters north. One tangible result of the migration, scientists report, is that animals will learn to live with new neighbors. But polar biologists worry that animals could get a little too friendly with each other. With less ice clogging Arctic seas, whales are ranging farther; meanwhile, animals like seals that breed on the ice have fewer places to go. In both cases, the chances of encountering a different species jump. “All of a sudden, hybridization will skyrocket,” says Brendan Kelly, a polar ecologist at the National Science Foundation.

The first confirmed cross between a polar bear and a grizzly bear—a white bear with brown patches—was documented in 2006; genetic analysis of a second, found in 2010, revealed that its mother was also a hybrid, suggesting that more instances are happening under scientists’ radar. In 2009, a biologist at the National Marine Mammal Laboratory photographed a probable bowhead/right whale hybrid in the Bering Sea. More hybrids are possible. Kelly and his coauthors have counted 34 opportunities for hybridization across 22 Arctic or near-Arctic species, based on the animals’ genetic compatibility and geographic range. The list includes potential hybrids of ringed and ribbon seals, Atlantic walrus and Pacific walrus, and beluga whales and narwhals.​
- read the full article A Strange New Gene Pool of Animals Is Brewing in the Arctic (from Nautilus)​
 
Laurel said:
http://static.nautil.us/3444_758be1f9f7a7efac938ed8bd97c0e1cb.png

Scientists have seen the future and it is “grolar bears.”

In the last 40 years, the Arctic has warmed by about 3.5 degrees Fahrenheit, more than twice the overall global rise in that same period. Already grizzly bears are tromping into polar bear territory while fish like cod and salmon are leaving their historic haunts to follow warming waters north. One tangible result of the migration, scientists report, is that animals will learn to live with new neighbors. But polar biologists worry that animals could get a little too friendly with each other. With less ice clogging Arctic seas, whales are ranging farther; meanwhile, animals like seals that breed on the ice have fewer places to go. In both cases, the chances of encountering a different species jump. “All of a sudden, hybridization will skyrocket,” says Brendan Kelly, a polar ecologist at the National Science Foundation.

The first confirmed cross between a polar bear and a grizzly bear—a white bear with brown patches—was documented in 2006; genetic analysis of a second, found in 2010, revealed that its mother was also a hybrid, suggesting that more instances are happening under scientists’ radar. In 2009, a biologist at the National Marine Mammal Laboratory photographed a probable bowhead/right whale hybrid in the Bering Sea. More hybrids are possible. Kelly and his coauthors have counted 34 opportunities for hybridization across 22 Arctic or near-Arctic species, based on the animals’ genetic compatibility and geographic range. The list includes potential hybrids of ringed and ribbon seals, Atlantic walrus and Pacific walrus, and beluga whales and narwhals.​
- read the full article A Strange New Gene Pool of Animals Is Brewing in the Arctic (from Nautilus)​
Click to expand...

The hubris of human beings thinking they are in charge of arbitrating biodiversity is kind of cute. Species adapt, survive, change. If the hybrid is a better fit- it will thrive, if not- it will die off.

Why do some people only believe in Darwinism looking backward but think of the Earth as a giant wild-life conservatory of species as we know them today?
 
query said:
The hubris of human beings thinking they are in charge of arbitrating biodiversity is kind of cute. Species adapt, survive, change. If the hybrid is a better fit- it will thrive, if not- it will die off.

Why do some people only believe in Darwinism looking backward but think of the Earth as a giant wild-life conservatory of species as we know them today?
Click to expand...
Unless we learn how to prevent other species from going extinct, we will be next.

Damn, I'm glad you aren't in charge.
 
The comet on which scientists recently landed a probe is a fluffy ball of ice, dust and basic organic materials—and it is light enough to float on water, new research shows.

The measurements were taken from an array of instruments aboard the European Space Agency’s Rosetta spacecraft, which is currently in close orbit around a comet known as 67P/Churyumov-Gerasimenko, more than 500 million kilometers (310 million miles) from earth.

Published Thursday in seven separate studies in the journal Science, the data offer the most detailed description yet of a comet, including its shape, composition and surface features. The information provides insights into how these ancient cosmic bodies formed and how our solar system originated.

Photographs of 67P show a structure of steep cliffs, ravines and jagged formations—not dissimilar in appearance to hard, rocky formations seen on Earth. But the comet is fluffy, porous and only half as dense as water.

“This comet would float on a lake,” said Holger Sierks, lead author of one of the studies and scientist at the Max Planck Institute for Solar System Research in Germany.
 
Balladeer08 said:
I owned one of those. And wrote a traffic accident investigation program on it. Very useful, fun to go into court with. It seemed to unhinge the defense attorneys, they just couldn't wrap their minds around it back then. 8)
Click to expand...

How can anyone write a program on that little thing?

You must have gone blind doing so.
 
Couldn't remember who had this thread when I was looking for it yesterday. I wanted to post the obit for Charles Hard Townes. I posted a snippet in Good Reads, but I wanted a more in depth piece on him. I still haven't found one.

Decent piece in the Christian Science Monitor because he was known for being a person of religious type faith in contrast with his scientific bent. Although, from a human interest point of view that is sort of interesting, it was the way he moved from scientific discipline to discipline that interested me and I am finding little on that.
 
Around the time modern humans are thought to have first spread across Asia, a red dwarf star passed just 0.8 light-years from the sun, a group of astronomers have concluded.

Our wandering ancestors probably never noticed. Scholz's star, as the red dwarf star is nicknamed, is so faint that, despite being just 20 light-years away, it was only discovered in 2013. Even when 25 times closer, and therefore 600 times brighter, the star officially known as WISE J072003.20-084651.2 would have required binoculars to detect (had they existed at the time). However, magnetically active stars like Scholz's can flare and it's possible that it may have occasionally become bright enough to puzzle an observant early human.

Scholz's star almost certainly passed through the Oort cloud, where most comets dwell, but probably didn't reach the inner cloud where a gravitational disturbance can trigger a cascade of comets into the inner solar system.
 
Dwarf planet Ceres continues to puzzle scientists as NASA Dawn Mission gets closer to being captured into orbit around the object.

The latest images from Dawn, taken nearly 29,000 miles (46,000 kilometers) from Ceres, reveal that a bright spot that stands out in previous images lies close to yet another bright area. Details: http://go.nasa.gov/1DbyQqc

http://imagecache.jpl.nasa.gov/images/640x350/pia19185-16-640x350.jpg



I suspect it's a tritanium launch pad left by the aliens that used to live on Mars.
 
JohnnySavage said:
Dwarf planet Ceres continues to puzzle scientists as NASA Dawn Mission gets closer to being captured into orbit around the object.

The latest images from Dawn, taken nearly 29,000 miles (46,000 kilometers) from Ceres, reveal that a bright spot that stands out in previous images lies close to yet another bright area. Details: http://go.nasa.gov/1DbyQqc

http://imagecache.jpl.nasa.gov/images/640x350/pia19185-16-640x350.jpg



I suspect it's a tritanium launch pad left by the aliens that used to live on Mars.
Click to expand...
I believe it's 1975, the bright spot of Tony Orlando's career.
 
thør said:
It's really more engineering than science.

The Turbo Encabulator
Click to expand...

In the early 60's some guys who put together the GE internal supplies catalog (used by various GE plants for ordering) inserted this in to the catalog. It was discovered when someone in one of the plants came across it, couldn't figure out what it did and ordered one.
http://www.floobydust.com/turbo-encabulator/ge_turbo-encabulator.pdf

But yeah, that's Rockwell video is good. Have you seen the one where the guy in it talks about making it?
 
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