Assessing and Managing Pediatric Cardiac Rhythm Disturbances. Arrhythmia: Absence or disruption of cardiac electrical activity resulting in abnormality in the heart's normal rhythmic pattern. Bradycardia: A heart rate below the normal limit for age.
Throughout the world, about 900 million trees are cut down annually, as of 2014. That equates to about 2.47 million trees cut down every day. These trees are used to make everything from lumber and paper to deodorant and food additives. Continue Reading.
Harvard biologist E. O. Wilson estimates that 30,000 species per year (or three species per hour) are being driven to extinction. Compare this to the natural background rate of one extinction per million species per year, and you can see why scientists refer to it as a crisis unparalleled in human history.