Helicobacter pylori (H. pylori) is a common type of bacteria that infects the stomach lining and can lead to various gastrointestinal diseases such as gastritis, stomach ulcers, and cancer. The ...

Pygmy sperm whales (Kogia breviceps) are among the ocean's most enigmatic inhabitants—rarely seen and largely unstudied. They live far offshore in small groups, diving in search of squid and fish.