For 17 years Wallen was the team leader of Yellowstone National Park’s bison ecology program. He retired six years ago and in ...
Screwworm flies prefer to nest on the periphery of fresh wounds in warm-blooded animals — as well as humans — depositing ...
A terrifying parasite that eats cattle from the inside out is pouring across the US border from Mexico. The parasite spread ...
US health officials are urging cattle producers to be on high alert after a parasitic screwworm was found in Mexico, the ...
An STD is an infection that you get from someone else by having sex. You can get an STD by having vaginal sex (penis in the vagina), anal sex (penis in the rectum), or oral sex (penis in the mouth ...