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Galaxy survives black hole's feast—for now

Black holes are thought to gobble up so much surrounding material that they put an end to the life of their host galaxy. In that process they create a highly energetic object called a quasar which was previously thought to ...

Fish exposed to estrogen produce fewer males

Water tainted with even a small concentration of human hormones can have profound effects on fish, according to a University of Cincinnati biologist.

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Birth

Birth (calving in livestock and some other animals, whelping in carnivorous mammals) is the act or process of bearing or bringing forth offspring. The offspring is brought forth from the mother. The time of human birth is defined as the time at which the fetus comes out of the mother's womb into the world. Different forms of birth are oviparity, vivipary and ovovivipary.

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