The long term benefits of the measles vaccine in Mexico.

We investigate the impacts on education and employment of a reduction in measles stemming from a nationwide immunization program in Mexico. The program lead to significant improvements in childhood health as measles causes "immune amnesia", leaving individuals susceptible to illness from other diseases. We find the measles vaccine led to large increases in educational attainment for both men and women, with the effects being concentrated in lower secondary school for women and split between lower and upper secondary school for men.

An Operationally Simple Approach to Indole Derivatives from 2-Alkenylanilines Utilizing an Oxidation-Intramolecular Cyclization-Elimination Sequence.

Herein we describe a novel route to indole derivatives from a variety of -substituted 2-alkenylanilines. This route features three operationally simple steps: (1) oxidation to convert -substituted 2-alkenylanilines into epoxide intermediates, (2) intramolecular cyclization, and (3) the acid-catalyzed elimination of water.

Importance of subsurface water for hydrological response during storms in a post-wildfire bedrock landscape.

Wildfire alters the hydrologic cycle, with important implications for water supply and hazards including flooding and debris flows. In this study we use a combination of electrical resistivity and stable water isotope analyses to investigate the hydrologic response during storms in three catchments: one unburned and two burned during the 2020 Bobcat Fire in the San Gabriel Mountains, California, USA. Electrical resistivity imaging shows that in the burned catchments, rainfall infiltrated into the weathered bedrock and persisted.

Two annual cycles of the Pacific cold tongue under orbital precession.

The Pacific cold tongue annual cycle in sea surface temperature is presumed to be driven by Earth's axial tilt (tilt effect), and thus its phasing should be fixed relative to the calendar. However, its phase and amplitude change dramatically and consistently under various configurations of orbital precession in several Earth System models. Here, we show that the cold tongue possesses another annual cycle driven by the variation in Earth-Sun distance (distance effect) from orbital eccentricity.