Some experts worry the US is heading for disaster due to a baby shortage, the Washington Post reports. According to 2016 data released Friday by the CDC, the number of women giving birth in the US is down 1% from 2015 and at a historic low. The birth rate is now 62 births per 1,000 women between the ages of 15 and 44. Experts are concerned about a "national emergency" if a shrinking population leads to fewer workers and a smaller tax base. And as usual, millennials are to blame. Here's what you need to know about birth rates and their impact: