Are tigers still endangered? Get the official conservation status, population numbers, main threats, and the varying recovery rates for each subspecies.
Understand the dual nature of Enterococcus hirae: a common gut resident and an emerging pathogen whose resistance complicates human and veterinary care.
The fossil record abruptly ends 66 million years ago. Learn the scientific criteria used to find the last non-avian dinosaur and the proof of its extinction.