ROTATION OF CROPS

In Bid to Sway Sales, Cameras Track Shoppers  http://nyti.ms/byvNXO

 

 Brian Harkin for The New York Times

Envirosell workers watch customers browsing in stores, noting what they look at and if they buy.

By STEPHANIE ROSENBLOOM

Published: March 19, 2010

 

More buyers needed in the south 40 aisle.

HAVE A HEART

Study suggests too many invasive heart tests given‎

NEW YORK — A troublingly high number of US patients who are given angiograms to check for heart disease turn out not to have a significant problem.