Finally, newborns vary greatly in the total amount of time they spend sleeping. In the first few days, the average newborn sleeps between 16-18 hours a day (Iglowstein et al 2002). By four weeks, newborn sleep averages about 14 hours. But the range is considerable. Some four-week-old babies sleep as little as 9 out of 24 hours. Others sleep for 19 hours a day (Iglowstein et al 2002).
Among the 58 killed in a mass shooting in Las Vegas Sunday night was a special education teacher, a kindergarten teacher and a nurse from Tennessee who saved his wife's life.
The mass shooting at the Mandalay Bay Resort and Casino in Las Vegas is officially the deadliest in modern American history. Unfortunately, though, it is also only one of many mass shootings that have scarred American life within the past few years. Indeed, since the assassination attempt on a Democratic congresswoman in Arizona at the start of 2011, there have been 18 mass shootings in this country that captured national headlines.