Doctors discovered that a 23-year-old who was complaining of indigestion had a live, 3-centimeter roach in his gastrointestinal tract Cara Lynn Shultz is a writer-reporter at PEOPLE. Her work has ...

Female cockroach droppings contained about 2,900 endotoxin units per milligram – more than twice the amount found in male droppings (1,400 EU/mg). On average, each female released around 5,000 ...

It is commonly assumed that because males produce many, tiny sperm, they are cheap to produce. Recent work, however, suggests that sperm production is not cost-free. If sperm are costly to produce, ...