The dual-class share structure enables founders to maintain control of the company while obtaining external financing. It is popular with innovative companies. However, it deviates from the default rule of “one share, one vote” and has hence elicited heated debates on the topic. This article...

Particle-phase polycyclic aromatic hydrocarbon (PAHs) accounts for a large proportion of hazardous compounds in PM2.5 derived from vehicle emission. This study aimed at determining the profiles of PAHs based on tunnel measurement and urban roadside observation. The real-world vehicle emission...