A new surgical technique, developed by scientists at the Rehabilitation Institute of Chicago, allows patients who have lost arms to use residual nerve signals to control a prosthetic limb. This video shows three patients testing a prototype limb being developed by DARPA. The patients can perform complex tasks, including picking up a cup, grasping a cracker without breaking it, and putting a spoon in a cup.
The hamster in this video is wearing a generator that turns mechanical energy into electrical current when the hamster runs or scratches. The two graphs on the device show current and voltage.
An animated fly-through shows the major components of a new zero-emissions, zero-waste city being built in the Middle East.
A treatment that shrinks gaps in the mucus membrane might protect caregivers during an influenza outbreak.
A new microscopy technique called iPALM has been used to reveal structures within cells. Fluorescent labels have been attached to integrins, proteins that cells use to attach to surfaces. The yellow and red regions depict areas where the cell has used integrins to attach to a glass surface. The blue and purple regions are networks of integrins inside a cell.
NASA's newest exploration rover, dubbed Axel for its design, can climb steep and rocky terrain and explore deep craters on planets like Mars. It uses only three actuators to operate upside down, right side up, turn in place, and follow illogical paths. Axel can maneuver autonomously using cameras, sensors, and wireless communication, or be tethered to a larger spacecraft.
A new tool could help people organize information from Web searches.
The software now lets users dive miles beneath the ocean waves.
Scientists at Carnegie Mellon have engineered a snakelike robotic arm that can monitor health signs and potentially administer treatments. The robot is equipped with sensors and a small camera, which wirelessly relays video to a laptop. A researcher watches the video onscreen and wirelessly controls the robot’s movements with a joystick. The robot can move anywhere along the length of the body, and can lower itself to administer oxygen or monitor a person’s breathing.
A scientist sends a wireless signal from the laptop to the beetle to start and then stop flight. The beetle, seen in the upper part of the frame, is tethered for practical purposes. The insect is attached to a clear plate, so that its flight pattern can be better observed. An oscilloscope shows the electrical signals as they are delivered: a short oscillating pulse triggers the animal to flap its wings, and it continues flapping until a short single pulse tells it to stop.