We present longitudinal employment and work-incentive statistics for individuals who began receiving Social Security Disability Insurance (DI) benefits from 1996 through 2006. For the longest-observed cohort, 28 percent returned to work, 6.5 percent had their benefits suspended for work in at...

We use data from several national employer surveys conducted between the late 1980s and the mid-1990s to investigate the effect of state-level underwriting reforms on HMO penetration in the small-group health insurance market. We identify reform effects by exploiting cross-state variation in the...

Ag3PO4 has an excellent visible light response, but its serious photo-corrosion has limited its application in environmental remediation. Here, we constructed a magnetic heterojunction photocatalyst (CuFe2O4 /Biochar/Ag3PO4 ) to inhibit its photo-corrosion and enhance photocatalytic activity....