analysed. Heckman two-step estimates show that households respond to forest scarcity, as measured by the opportunity costs of …

virtual water volumes are lumped together from countries experiencing vastly different degrees of water scarcity. We therefore … incorporate water scarcity into assessments of virtual water flows. Second, we note that some previous studies assess virtual … scarcity. We find that the structure of global virtual water networks changes significantly after adjusting for water scarcity …

results. First, we demonstrate that scarcity of cognitive resources leads to passive behavior. Second, policies that encourage …