Laughter is Infectious. Can we use it for good ? - with Alanta Colley ?

International Health Workers witness daily tragedies . Sometimes they get sick too. Where are the science comedian without borders?  Meet Alanta Colley. With many tales to years abroad, she talks of the parasites she's been infected with,  those she's seen and read about. Does Dr Karl & Dr Alice test the formula "Tragedy+Time = Comedy". 
rpt