We expand the search for modifiable features of neighborhood environments that alter obesity risk in two ways. First, we examine residents' access to neighborhood retail food options in combination with neighborhood features that facilitate physical activity. Second, we evaluate neighborhood...

The United States in the 19th century was marked by initially quite high fertility levels but also by the onset of a relatively early and steep decline in fertility. Most of what we know about these patterns in the US comes from aggregate (typically county or state level) data. We provide new,...