Infrastructure and its effects on economic growth, social welfare, and sustainability receive a great deal of attention today. There is widespread agreement that infrastructure is a key dimension of global development and that its impact reaches deep into the broader economy with important and...

Social media platforms ban users and remove posts to moderate their content. This "speech policing" remains controversial because little is known about its consequences and the costs and benefits for different individuals. I conduct two pre-registered field experiments on Twitter to examine the...

Various plants and resources such as orchards are vulnerable to the detrimental effects of successful invasions by alien animal or plant species. To outline an appropriate policy response, we first use renewal theory to construct a stochastic model of optimal orchard management in the presence...

Chemisch-synthetische Pflanzenschutzmittel sind ein bedeutender Bestandteil des konventionellen Ackerbaus in Deutschland. Sie haben dazu beigetragen, die Flächenproduktivität zu erhöhen, die Ertragsverluste zu mindern und dadurch einen wesentlichen Beitrag zur Ernährungssicherung geleistet....

Rapidly declining biodiversity has made international and national policies focus on the question of how best to protect genetic resources. Loss of biodiversity does not only concern wildlife, but equally affects agriculturally used species. These species, of foremost importance for the...