Protect your skeleton from osteoporosis with Calcium, Vitamin D and Excercise. Thrive and keep your bones alive! (scroll down)

Kaiser has a national 'Healthy Bones' campaign to reduce fractures caused by osteoporosis
http://www.accountablecarefacts.org/case_studies/kaiser-permanentes-healthy-bones-program-results-in-reduction-in-hip-fractures--1-2


Negative version:

(our office skeleton, posed on its side on a black carpet and then inverted in photoshop)