The National Weather Service officially ranked the tornado Sunday, April 15 as an EF2. It maintained that strength, as it crossed 30 miles into Greensboro and then Rockingham County. While we've ...

In a “normal” electrocardiogram (ECG), the transition of the QRS axis in the precordial leads occurs between leads V 3 and V 4 (i.e., there is a dominant S in V 3 and a dominant R in V 4).

Usually, tornadoes in the U.S. rotate counterclockwise. Coriolis force, imparted due to the Earth’s rotation, causes air around low centers to circulate counterclockwise in the northern hemisphere.

If a client emailed you a PDF with a combination of pages in portrait and landscape mode, some pages may display at a 90-degree angle. Adobe Reader lets you rotate the view so you can easily read this ...