Observations of electrical signal propagation across colonies of epithelial cells suggest they may be able to communicate, ...

The distress signal CQD originated from the signal CQ, expressing "seeking you," or "all stations." The signal CQ was commonly used among wireless operators -- and land-based telegraphers before ...

The electrochemical sensor attaches directly to live plant leaves and monitors hydrogen peroxide, a key distress signal ... into measurable differences in electrical current.