Going for the kill
On alert
Grass is greener
Chameleon effect
TANZANIA
Mystery malady
Ruling over worms
The length of worms is determined by the hosts
Large-hearted men
Pace breakers
The use of cellular phones can damage heart pacemakers
Genetic thieves
Soft-hearted
Tracking syphilis
Knit me an artery!
Attention heart patients
Puppy problem
PESTS ATTACK
Distant relatives
COLOMBIA