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Volume 34 Issue 9 September Impact Factor. Highly cited article collection In celebration of the latest impact factor announcement, read a collection of highly cited articles from the ESHRE journals. Explore the collection.
The perioperative period: a critical yet neglected time window for reducing the recurrence risk of endometriosis? Detection of chlamydia infection within human testicular biopsies. A mouse model to investigate the impact of testosterone therapy on reproduction in transgender men. Most read Thermal asymmetry of the human scrotum. Low-level sex chromosome mosaicism in female partners of couples undergoing ICSI therapy does not significantly affect treatment outcome.
The Human Protein Atlas
Qualitative research methods: when to use them and how to judge them. Vaginal bleeding in very early pregnancy.
Right-sided ovulation favours pregnancy more than left-sided ovulation. Testicular dysgenesis syndrome: an increasingly common developmental disorder with environmental aspects: Opinion. The cause of this cooling event has been debated a great deal, but the new study controversially claims to have solved the mystery. After the alleged impact, there was "a dramatic termination of the stone tool technology of Clovis people" in North America.
Similar abrupt disappearances were seen around this time in Africa, according to the archaeological record. Scientists have detected an "almost simultaneous termination of the Robberg stone artefact industry" in South Africa, researchers said.
Most scientists think Younger Dryas was triggered by changes in Earth's ocean circulation systems. There's no proof either way, so the cause of the catastrophic event remains a mystery for now. In other space news, an asteroid larger than a double-decker bus soared closer to Earth than the Moon this week.
- Grave Shadows: 5 (Red Rock Mysteries)!
- Trappist Tales.
- Dominated by the Doctor 3: Fertility Treatment (Breeding BDSM Erotica).
Scientists recently discovered a "Super-Earth" 31 light-years away that humans could one day colonise. We pay for your stories! Email us at tech the-sun. But this transformation has unintended consequences for other species as well as for ourselves, creating new survival challenges. In , the International Union for Conservation of Nature IUCN reported that current bird, mammal, and amphibian extinction rates were at least 48 times greater than natural extinction rates—possibly 1, times higher.
Who We Are
As of , humans had built so many dams that nearly six times as much water was held in storage as flowed freely in rivers. FACT: From to , the population of cattle, pigs, sheep, and goats increased from 2. The number of domesticated fowl grew from 3 to 16 billion. FACT: Of the estimated 15, species of mammals and birds, only about 30—40 have been used for food. FACT: Between and , just 40 years, the human population doubled from 3 billion to 6 billion people. FACT: A child dies of malaria every 30 seconds. FACT: Every second someone in the world is infected with tuberculosis.
Slideshows Videos Audio. Human Characteristics: Humans Change the World For millions of years all humans, early and modern alike, had to find their own food.