Only two blue whale births have ever been recorded in human history, both decades ago. This remains an extraordinary mystery, given there used to be hundreds of thousands of blue whales before whaling started—even today, ...
Plants & Animals
Feb 21, 2025
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72
New research has resulted in the first high-resolution molecular picture of the equine endometrium—the inner lining of the uterus—before and after embryo implantation. This picture, or cell atlas, highlights key similarities ...
Cell & Microbiology
Feb 17, 2025
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5
In the UK, early pregnancy endings are defined as pregnancies that end before 24 weeks' gestation. These include miscarriages, abortions (sometimes called terminations), ectopic pregnancies where an embryo implants outside ...
Social Sciences
Dec 17, 2024
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3
Proper intake of food is essential for pregnant humpback whales to pull off the extreme physical feat of annual migration between Hawaiʻi and Alaska. Researchers at the Marine Mammal Research Program (MMRP) at University ...
Plants & Animals
Dec 11, 2024
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34
From Velcro to solar cells, many technological innovations have been inspired by nature. In medical diagnostics, researchers also draw inspiration from biological principles. A research team from the University of Freiburg ...
Biotechnology
Sep 26, 2024
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2
Neuroscientist Liz Chrastil got the unique chance to see how her brain changed while she was pregnant and share what she learned in a new study that offers the first detailed map of a woman's brain throughout gestation.
Biotechnology
Sep 16, 2024
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29
A study of horses—which share many important similarities with humans in their chromosomes and pregnancies—revealed that 42% of miscarriages and spontaneous abortions in the first two months of pregnancy were due to complications ...
Veterinary medicine
Aug 5, 2024
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46
Eight years after the market release of VANGUARD crLyme, a first-of-its-kind vaccine designed to prevent Lyme disease in dogs, the Marconi laboratory in the Department of Microbiology and Immunology of the Virginia Commonwealth ...
Veterinary medicine
Jul 19, 2024
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0
New research reveals that pregnancy-related brain impairment is present in live-bearing fish, but instead of affecting learning and memory as expected from similar research on mammals, it appears to have a stronger impact ...
Plants & Animals
Jul 3, 2024
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0
Different social contexts can transform the meaning and implications of life experiences. For example, a life event like teen childbirth can have vastly different impacts depending on the era and societal norms. In the post-World ...
Social Sciences
Jun 11, 2024
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0
Pregnancy (latin graviditas) is the carrying of one or more offspring, known as a fetus or embryo, inside the uterus of a female. In a pregnancy, there can be multiple gestations, as in the case of twins or triplets. Human pregnancy is the most studied of all mammalian pregnancies. Obstetrics is the surgical field that studies and cares for high risk pregnancy. Midwifery is the non-surgical field that cares for pregnancy and pregnant women.
Childbirth usually occurs about 38 weeks after conception; i.e., approximately 40 weeks from the last normal menstrual period (LNMP) in humans. The World Health Organization defines normal term for delivery as between 37 weeks and 42 weeks. The calculation of this date involves the assumption of a regular 28-day period.
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