&quot;Just asking people&quot; is a part of &quot;conducting research.&quot;<p><a href="http:&#x2F;&#x2F;www.vox.com&#x2F;2015&#x2F;12&#x2F;23&#x2F;10652258&#x2F;teen-birth-decline-map" rel="nofollow">http:&#x2F;&#x2F;www.vox.com&#x2F;2015&#x2F;12&#x2F;23&#x2F;10652258&#x2F;teen-birth-decline-ma...</a><p>&quot;Experts like Ehrlich know that the teen birth rate is dropping fast — faster than it has since the federal government began to keep count. They know that this is not about teens terminating more pregnancies; separate data shows the teen abortion rate has steadily declined since the late 1980s.<p>What they don&#x27;t understand is what, exactly, is driving the trend. But they do have lots of ideas.<p>I&#x27;ve spent a lot of time talking to experts who study teen pregnancy. They all told me something pretty similar: We don&#x27;t have one clear-cut explanation for why teen births are going down. And if anyone tells you they have the answer, you should be skeptical.&quot;