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Birth control, also known as contraception, anticonception, and fertility control, is the use of methods or devices to prevent pregnancy. [ 1 ] [ 2 ] Birth control has been used since ancient times, but effective and safe methods of birth control only became available in the 20th century. [ 3 ]
The Humane Society of the United States runs a deer birth control program, but it is experimental; it may not be cost-effective in the long run. [2] [3] [needs update] It may cost $300 [3] to $1000 [2] per deer. One contraceptive vaccine used is porcine zona pellucida (PZP), or derivatives.
As the birth control societies spread across Europe, so did birth control clinics. The first birth control clinic in the world was established in the Netherlands in 1882, run by the Netherlands' first female physician, Aletta Jacobs. [20] The first birth control clinic in England was established in 1921 by Marie Stopes, in London. [21]
This is known as Mendelian inheritance and it eventually established the modern understanding of inheritance from two gametes. In 1902, C.E. McClung identified sex chromosomes in bugs. In 1917, C.E. Allen, discovered sex determination mechanisms in plants. In 1922, C.B. Bridges, put forth the Genic Balance Theory of sex determination.
The first permanent birth control clinic was established in Britain in 1921 by the birth control campaigner Marie Stopes, in collaboration with the Malthusian League. Stopes, who exchanged ideas with Sanger, [ 49 ] wrote her book Married Love on birth control in 1918; - it was eventually published privately due to its controversial nature. [ 50 ]
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Preterm birth is the birth of an infant at fewer than 37 weeks gestational age. Globally, about 15 million infants were born before 37 weeks of gestation. [152] Premature birth is the leading cause of death in children under five years of age though many that survive experience disabilities including learning defects and visual and hearing ...
The public will also be “actively involved” in the process of selecting new English bird names. “As scientists, we work to eliminate bias in science. But there has been historic bias in how ...