Retrospective sea-level mapping advances a promising geographic solution to the longstanding mystery about when, where, and how first Americans crossed over from Asia. A paleotopographic reconstruction accounting for Glacial Isostatic Adjustment digitally explores an archipelago 1400 km long that likely existed >30,000 BP 8000 BP. Here authors examine this Bering Transitory Archipelago in regar...

Cyclical patterns in earnings can arise when contracts between firms and their workers are incomplete, cannot borrow or lend so as to smooth consumption. Effort cycles generate occasional large changes earnings. These transitory, consistent with recent empirical findings.

We consider a general framework to study the evolution of wage and earnings residuals that incorporates features highlighted by two influential but distinct literatures in economics: (i) unobserved skills with changing non-linear pricing functions and (ii) idiosyncratic shocks that follow a rich stochastic process. Specifically, we consider residuals for individual i in period t of the form: Wi...

determinants of early onset haze were retrospectively explored in patients who had been undergone laser-assisted sub-epithelial keratectomy (lasek) in a private eye clinic. the technique included creating an epithelial flap following 20 seconds exposure to 20% alcohol. ‘optimized’ ablation profile was used by allegretto laser (wavelight technologie). following repositioning of the flap, a singl...