Three factors will stall dementia and the aging process, according to new U.S. study Soldiers in Guinea-Bissau appear on state television saying they have seized power ...

Simple dc Motor / How to Make a Simple dc Motor ...

One of the major difficulties in studying electricity, especially when compared to many other physical phenomena, is that it cannot be observed directly by human senses. We can manipulate it to ...

Millions of Americans use e-cigarettes. Despite their popularity, little is known about their health effects. Some suggest that e-cigarettes likely confer lower risk compared to combustible tobacco ...