We present causal evidence on the rent-sharing elasticity of German manufacturing firms. We develop a new firm-level Bartik instrument for firm rents that combines the firms’ predetermined energy input mix with national energy carrier price changes. Instrumental variable estimation yields a rent-sharing elasticity of approximately 0.20 implying that a 10% change in rents leads to a 2% change in wages. Rent-sharing induced by energy price variation is asymmetric and driven by energy price increases, such that, on average, workers do not benefit from energy price reductions but are harmed by price increases. Reduced-form evidence shows that a 10% increase in firm-level energy prices depresses firm-level wage growth by 0.34%.

Competition between firms to invent and patent an idea, or "patent racing," has been much discussed in theory, but seldom analyzed empirically. This article introduces an empirical way to identify patent races, and provides the first broad-based view of them in the real world. It reveals that patent races are common, particularly in information-technology fields. The analysis is then extended to get the causal impact of winning a patent race, using a regression-discontinuity approach. It shows that patent race winners do significantly more follow-on innovation, and the follow-on research that they do is more similar to what was covered by the patent.

Tymen deJong, First Solar's senior vice president of module manufacturing, fixated yet again on the company's latest 10-K. DeJong had joined the company in January of 2010, at a time when First Solar's future appeared bright. Now, just two years later, First Solar's cost advantage was eroding, and deJong was facing challenges that would require tough decisions.