The «sensing skin» technology detects cracks in concrete (as in top image) and reports when and where the damage took place (as in bottom image). (sciencedaily.com)
Top image show magnetic state with -3 volts applied, and bottom image shows nonmagnetic state with 0 volts applied. (sciencedaily.com)
Global hurricane frequency versus global ocean temperatures - Top image from FSU ACE, bottom image from GISS ocean data plotted by WUWT - click for larger image (wattsupwiththat.com)