The received wisdom is that cheaper foreign inputs may replace tasks previously done by domestic labor, and cause displacement of workers at the home country. However, using the U.S. multinational enterprises data, the empirical evidence in this paper does not support the idea that the imported...

The received wisdom is that cheaper foreign inputs may replace tasks previously done by domestic labor, and cause displacement of workers at the home country. However, using the U.S. multinational enterprises data, the empirical evidence in this paper does not support the idea that the imported...

China and some other Asian countries have experienced skewed sex ratios, triggering intense competition and pressure in the marriage market. Meanwhile, China has more smokers than any other country, with half of men smoke while few women smoke. Men are the major income earners in most Chinese...

China and some other Asian countries have experienced skewed sex ratios, triggering intense competition and pressure in the marriage market. Meanwhile, China has more smokers than any other country, with half of men smoke while few women smoke. Men are the major income earners in most Chinese...

China and some other Asian countries have experienced skewed sex ratios, triggering intense competition and pressure in the marriage market. Meanwhile, China has more smokers than any other country, with half of men smoke while few women smoke. Men are the major income earners in most Chinese...

China and some other Asian countries have experienced skewed sex ratios, triggering intense competition and pressure in the marriage market. Meanwhile, China has more smokers than any other country, with half of men smoke while few women smoke. Men are the major income earners in most Chinese...

An increasingly popular trend in online businesses is the adoption of the freemium model, in which premium features are provided along with free features. By providing free features to a large fraction of users and by managing the social interactions between users and their friends, online...

China and some other Asian countries have experienced skewed sex ratios, triggering intense competition and pressure in the marriage market. Meanwhile, China has more smokers than any other country, with half of men smoke while few women smoke. Men are the major income earners in most Chinese...

The fetal origins hypothesis (hereafter FOH), put forward in the epidemiological literature and later flourished in the economics literature, suggests that the time in utero is a critical period for human development. However, much attention has been paid to the consequences of fetal exposures...

Blood collection following nonstandard operations largely increases the risks of infectious diseases through cross-contamination. Commercial plasma donation and the resulting HIV/AIDS and hepatitis C epidemics in central China in the 1990s killed more than one million people. Many blood banks...