The value of teaching increases with tool complexity in cumulative cultural evolution.

Human cumulative cultural evolution (CCE) is recognized as a powerful ecological and evolutionary force, but its origins are poorly understood. The long-standing view that CCE requires specialized social learning processes such as teaching has recently come under question, and cannot explain why such processes evolved in the first place. An alternative, but largely untested, hypothesis is that these processes gradually coevolved with an increasing reliance on complex tools.

The SOS Pesca Project: A Multinational and Intersectoral Collaboration for Sustainable Fisheries, Marine Conservation and Improved Quality of Life in Coastal Communities.

Healthy fisheries, particularly small-scale fisheries, are closely linked to prosperous and healthy coastal communities and resilient marine environments. Cuba's marine and coastal ecosystems are highly biodiverse and support fisheries vital to food security and the national economy. Cuban government and state institutions, scientists, managers and fishers-along with colleagues from other countries-have expressed growing concern about the decline of fishing resources.

Whipple's Disease in an Afro-Caribbean National.

Whipple's disease is a rare multi-organ infectious disease caused by Tropheryma whipplei. It is fatal without treatment. We report on a 40-year old Afro-Jamaican man who presented with a six-month history of weight loss and diarrhoea.