CELINA - Though dinosaurs are the most notable of the prehistoric animals, smaller mammals and fish walked and swam in Ohio, ...

Fish often avoid intense stimuli, but scientists and animal welfare groups have long debated whether fish can feel pain. So is there an answer? Animal rights organization PETA claims on its ...

Though it’s an unexpected symptom, dizziness can occur during your period. Reproductive problems like heavy menstrual bleeding, period pain, and hormonal changes may cause dizziness. Or, the hormonal ...

Although many methods allow for period-like bleeding, it isn’t necessary. In some cases, bleeding may slow or stop entirely. True menstruation occurs after ovulation when the ovary releases an ...

Unearthed from stratum from the Silurian Period near Prague, the fossil is comprised of a furcate stem with a trumpet-shaped spore case at its end. Since it has no leaves, the species is believed ...

Late or missed menstrual period Late period: 5 or more days late compared to normal menstrual cycle Missed period: no menstrual flow for more than 6 weeks Teen not using any birth control that stops ...

Cramps aren’t always a sign of menstruation. Many people develop cramps when they don’t have their period. There are various causes of cramps with no period. Issues related to pregnancy are often to ...

Sharks and rays have populated the world's oceans for around 450 million years, but more than a third of the species living today are severely threatened by overfishing and the loss of their ...

He said: “It tells us something about who was eating who 66 million years ago,” cited by the BBC. During the Cretaceous period, fish and sharks would consume sea lilies, which are mostly skeletal and ...