Fuzzy green “glacier mice”

Glacier mice in IcelandRuth Mottram

In 2006, while hiking around the Root Glacier in Alaska to set up scientific instruments, researcher Tim Bartholomaus encountered something unexpected…

Scattered across the glacier were balls of moss. “They’re not attached to anything and they’re just resting there on ice,” he says. “They’re bright green in a world of white.”…

…In the journal Polar Biology, they report that the balls can persist for years and move around in a coordinated, herdlike fashion that the researchers can not yet explain.

“The whole colony of moss balls, this whole grouping, moves at about the same speeds and in the same directions,” Bartholomaus says. “Those speeds and directions can change over the course of weeks.”

Similar “mice” are found on many glaciers around the world. And the whole picture, a complete understanding of how these “herds” move in unison, hasn’t yet been proven. They are being tagged – and tracked. They change direction sometimes. There are individual “mice” scientists have watched for years. RTFA. Stay in touch. The suspense is unbearable!

Scientists uncover essentially invisible motion in magnified video

A 30-second video of a newborn baby shows the infant silently snoozing in its crib, his breathing barely perceptible. But when the video is run through an algorithm that can amplify both movement and color, the baby’s face blinks crimson with each tiny heartbeat.

The amplification process is called Eulerian Video Magnification, and is the brainchild of a team of scientists at the Massachusetts Institute of Technology’s Computer Science and Artificial Intelligence Laboratory.

The team originally developed the program to monitor neonatal babies without making physical contact. But they quickly learned that the algorithm can be applied to other videos to reveal changes imperceptible to the naked eye. Prof. William T. Freeman, a leader on the team, imagines its use in search and rescue, so that rescuers could tell from a distance if someone trapped on a ledge, say, is still breathing…

The system works by homing in on specific pixels in a video over the course of time. Frame-by-frame, the program identifies minute changes in color and then amplifies them up to 100 times, turning, say, a subtle shift toward pink to a bright crimson…In one video presented by the scientists, a stationary crane sits on a construction site, so still it could be a photograph. But once run through the program, the crane appears to sway precariously in the wind, perhaps tipping workers off to a potential hazard.

It is important to note that the crane does not actually move as much as the video seems to show. It is the process of motion amplification that gives the crane its movement.

The program originally gained attention last summer when the team presented it at the annual computer graphics conference known as Siggraph in Los Angeles.

Since then, the M.I.T. team has improved the algorithm to achieve better quality results, with significant improvements in clarity and accuracy.

First, it’s great knowing that Siggraph still rocks, still a regular part of the future of computing.

Second, we’re witnessing one more of an endless stream of concepts that become more than daydreams with the sort of computing horsepower it is possible to put into motion. What’s next?

A Flight Through the Universe

There are 400,000 galaxies viewed in this animation. They are in their real relative positions.

Our galaxy, the Milky Way, is pretty average. It has between 200 to 400 billion stars – like our sun. Our galaxy is but one of these in the animation.

Realize, please, how unimportant human beings are in the universe. Reflect on the absurdity of superstitions. They all think our species is the center of something-or-other.

Thanks, Ursarodinia