In this video, a mouse with a fiberoptic cable implanted into his brain explores a four-arm maze. The animal has been genetically engineered to express light-sensitive proteins in a specific part of the amygdala, a brain region linked to fear. Mice are naturally afraid of open spaces, and at the beginning of the video, the mouse spends most of his time in one corner of the maze, occasionally dashing out to explore his environment. Turning on the light (as indicated by blue text) activates a specific neural circuit, which appears to make the mouse much braver, continually exploring all the parts of the maze. The video is shown at ten times normal speed.
The two upper panels of this video show different views of a cell while the lower left shows the presence of bubbles, called vesicles, within it. On the lower right, the thin petals can be see in cross-section as they form, ripple over the cell, and subside. Built from 40,000 images, this video provides scientists with an unprecedented amount of visual information.
Cellular projections called filopodia grow and contract on the surface of this cell, waving like tiny limbs or porcupine quills.
Chromosomes in a cell line up next to each other and then slide apart as they are partitioned into two daughter cells.
The CEO of Codexis describes how his company is making renewable fuels affordable.
At the 2011 Blur Conference, which focuses on human-computer interaction, hackers demonstrated how they adapted the Microsoft Kinect to work for purposes beyond what Microsoft originally intended.
Cutta Cutta, the cat of MIT researcher Roman Stocker, demonstrates how felines balance the forces of inertia and gravity when they drink.
Twitter creator's new startup lets people accept credit cards with their smart phone.
The Sierra Nevada Corporation is testing a spacecraft that could replace the space shuttle, carrying people and cargo into low earth orbit and back.
Are we only at the beginning of an era of IT-driven productivity gains? Erik Brynjolfsson, director of the MIT Center for Digital Business, says there’s still enormous potential for businesses to use information technology to test new processes and improve operations rapidly—and very cheaply.