The span of control of the average manager in an organization determines the width of the organization as seen when viewing the organizational chart. Fewer reports to the average manager will result in a taller organizational chart, with more management positions relative to the number of individual contributors.
Closely related to sloths and anteaters, armadillos are a unique species with around 20 different subspecies. One variety, the Giant armadillo, is close to extinction in their wild habitats of South America.
The 100 exotic birds on the verge of extinction. Scientists from ZSL and Yale University have compiled a list of the rare birds at risk of extinction - and it includes the 'little dodo'. Hunting, deforestation and habitat degradation have pushed one in eight bird species to the edge of extinction, according to top scientists from the UK and US.