In the depths of the world's longest cave, researchers have uncovered the fossilized remains of a 340-million-year-old shark.

Deep within Mammoth Cave, the world’s longest cave system, paleontologists have uncovered the remains of a never-before-seen ...

Primary amenorrhea is the absence of periods since you were born. It is diagnosed when a female has had no period by age 15. Primary amenorrhea is also described when a girl's first period (called ...

A new study reveals that a region in China's Turpan-Hami Basin served as a refugium, or "life oasis ... %—far lower than the marine extinction rate during the same period.

Sex during your period is safe, but whether you choose to have it depends on personal comfort. Some people feel uneasy about it, while others find it enhances intimacy and relieves menstrual cramps.

a fan-like coral and a venomous deep-sea snail equipped with harpoon-like teeth are among 866 previously unknown species discovered as part of an ambitious effort to document marine life.

“It causes this stress that trickles into their home life ... period of time, I can see one wanting to escape from that kind of situation, if there’s not an end in sight to it.” The Marine ...

Tantalizers Plc has announced the signing of a partnership agreement with the US-based marine group Quinn Fisheries and Harvester Fishing for the acquisition of 10 fully equipped modern fishing ...

creating conditions so hostile that the tropics became devoid of animal life. This ‘tropical dead zone’ drastically impacted the distributions of both marine and terrestrial organisms. “We collected ...