Ford's outfitted the Fusion Energi with a dizzying array of driver-assist tech, including a lane-keeping system, adaptive cruise control, driver alert system, active park assist, rear camera, blind-spot indicator system with cross-traffic alert and pull-drift compensation (phew).

ENGADGET: Ford Fusion Energi plug-in hybrid test drive (video)

Most children with MND had abnormal muscle tone and posture, an indicator of nervous-system dysfunction in young children, which is linked to learning and behavioral disorders such as ADHD, researchers said.

WSJ: Predicting Carpal Tunnel Syndrome

What happens to private equity may be a leading indicator of how the crisis in the financial system will affect the rest of the business world, both because private-equity deals are so dependent on large amounts of debt, and because many of the shrewdest judges of corporate value work for private-equity funds.

ECONOMIST: Business and the credit crunch

Often the goal is to find the key indicator of a problem or to track the performance of a system.

FORBES: Splunk's Godfrey Sullivan on Overcoming Barriers to Operational Intelligence

Guidant is developing a wireless "advanced patient management" system for defibrillators, and is evaluating whether heart rate variability is a good indicator of attacks.

FORBES: The Doctor Is In