Old Pesticides Pose New Problems for Developing World

Old new world

This spring sees two major anniversaries in the colonial history of Europe: Britain is commemorating the 200th anniversary of the abolition of its until then lucrative but cruel slave trade, and the US marks the 400th anniversary of the first permanent European settlement in Jamestown. The British Museum is also showing a collection of paintings and illustrations it holds, which represent the f...

Old World Econometrics and New World Theory

This paper summarizes recent work on the econometrics of identification in rational expectations models by myself and Andreas Beyer. In this work, we discuss the relationship between structure and reduced form in linear rational expectations models and we apply our analysis to a class of new Keynesian models that are frequently used to inform the policy debate. We argue that the identifying ass...

Some New World Lessons for the Old World

Bioreactors – New Solutions for Old Problems

A major effort has been invested in making bioreactors more efficient. The goal has been achieved in several steps. Firstly, a replacement of the traditional rotation movement by an oscillating up and down movement of stirring discs driven by an electromagnet yields several important advantages. A soft, whole volume movement of the medium results in optimal gas distribution throughout the mediu...

New Challenges and Old Problems