Sir, Edward Luce raises a valid criticism of tax avoidance strategies employed by Facebook and other Silicon Valley giants (“What Zuckerberg could learn from Buffett”, December 5). But Warren Buffett ...

In this paper we describe two episodes of instructional interaction, in which examples are used in order to help students face their misconceptions. We introduce the notions of pivotal example and ...

A new paper explores community-supported agriculture and its survival in the face of economic globalization. Organic food was once an economic haven for small farms who distributed their goods ...