First, trend for economic equality in US has been changing with less opportunity for people to transcend inter-generational economic status than they have in other countries, like Norway, Finland, Denmark and Canada. Why the changes? [ dur: 13 mins. ]

* Miles Corak is a professor of economics with the Graduate School of Public and International Affairs at the University of Ottowa. He is the author of, “Generational Income Mobility in North America and Europe” and “Income Mobility Across the Generations”

Then, climate change, pesticides and mites are killing off the planet’s bees. What will happen to the planet’s foods? And can the bee colony collapse be stopped? [ dur: 45 mins. ]

* Jeremy Kerr is a Professor of Biology at the University of Ottowa, specializing in conservation biology and biodiversity – Macroecology , Conservation research site. His latest publication links the decline of bumble bees to climate change.

* Peter Dearden is a Professor of Genetics and a researcher in the laboratory for evolution and development at Otago University where he specializes in evolution, development and epigenetics (link).

* Paulo de Souza is a Professor and team leader at the Commonwealth Scientific and Industrial Research Organization in Australia, and the Global Initiative for Honey Bee Health (link). He’s also a collaborating scientist on NASA’s Mars exploration Rover Mission.

Find books authored by our guest scholars on this Book Shelf .

This program is produced with generous contribution from Ankine Aghassian, Melissa Chiprin, Tim Page, Mike Hurst and Sudd Dongre.