Advances in fertility science mean that people can, literally, put their eggs or sperm on ice and delay the start of parenthood.
A dead sperm whale that washed ashore in a national park in Indonesia had nearly 6kg (13 lbs) of plastic waste in its stomach, park officials say.
Advances in fertility science mean that people can, literally, put their eggs or sperm on ice and delay the start of parenthood.
Advances in fertility science mean that people can, literally, put their eggs or sperm on ice and delay the start of parenthood.
A study of 124,000 men visiting fertility clinics in Europe and the USA found sperm quality reducing by almost 2% per year.
It is derived from Arabic, anbar, which refers to ambergris, a waxy secretion of the sperm whale that is used as a spice and in perfumery.
"And then there will be a scramble, and a sperm bank, and a tank will arrive in her living room.
Researchers say the protein-rich food boosts men and women's sex drive and improves the quality of their sperm and eggs.
"There are connections to increases in certain kinds of cancer to lower sperm count to increases in conditions like ADHD and autism," said Mason.
,,: "They were my sperm and egg bank.
Scientists report that sperm counts have declined over the last 50 years and that environmental factors are to blame.
The gender of a baby is determined by the chromosomes in the father's sperm and so is set at conception.
They found sperm in greater numbers, with faster swimming speeds, and fewer abnormalities, in semen made during the winter.
The breakthrough has been described as a 'masterpiece' in bioengineering, which could eventually allow scientists to grow artificial human embryos in the lab without the need for a sperm or an egg.
The report is a landmark because it in effect amounts to an official sanctioning – by the National Academy of Sciences and National Academy of Medicine – of medical research that looks to edit, remove or add DNA in human eggs cells, sperm or embryos.
US research earlier this year found young men who watch TV for just three hours a day have half the sperm count of men who rarely watch TV.
The diseases are passed down from only the mother so a technique using a donor egg as well as the mother's egg and father's sperm has been developed.
Last year fewer than a fifth of young men who donated sperm in the inland province of Hunan had sufficiently healthy semen to qualify as a donor, according to a 15-year study of more than 30,000 applicants.
However, a Cambridge University study last year found that women searching for a father for their children should choose long-distance runners, who traditionally have very low levels of fat, because they are more likely to have stronger sex drives and higher sperm counts.
They have made tiny designer compounds which smuggle themselves into sperm, and stop their tails from wiggling.
