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Correcting the scientific record on gender incongruence: The PLOS ONE blog

I’ve posted or commented several times about relying on what I call single-study-science. The tendency to see some awesome scientific report and base one’s entire position on that one paper. This can be a problem in all areas of science.


A few months ago, PLOS ONE published a study of parental reports on gender dysphoria in adolescents and young adults, which was the subject of strong criticism and debate shortly after publication (see example here or here). We also received a large volume of personal communication, which I have personally reviewed. I would like to thank everyone who took the time to contact us with their assessment of this study.

Tool Discovered in 15th-Century Shipwreck Makes the Guinness Book of Records

“I have conducted numerous shipwreck projects around the world, many in depths greater than 4,000 and 5,000 meters,” Mearns says. “But I have never worked harder and had such fun as I did diving with our British and Omani team every day on this rewarding project.”

“You can only dream about finding such a rare and precious artifact as an astrolabe, but then to find such a historically important one in relatively good condition was a huge bonus.”

Semen Frozen 50 Years Ago Just Produced Dozens of Healthy Lambs

Semen frozen back in 1968 has been used to impregnate dozens of Merino ewes, resulting in healthy lambs. The Australian scientists who made it happen say it’s the oldest sperm ever used to produce offspring.

A research team led by Simon de Graaf from the Sydney Institute of Agriculture and School of Life and Environmental Sciences impregnated 34 Merino ewes with the thawed out 50-year-old ram sperm, according to a University of Sydney press release. Incredibly, the sperm resulted in birth rates comparable to semen frozen for 12 months.

‘Impossible’ discovery found on remote island off African coast: A ‘lost part of the world’

Researchers have found rocks on a small island between Madagascar and the eastern coast of Africa, a discovery that has been described as mysterious for one very important reason — they shouldn’t be there.

The rocks in question, quartzite, were discovered by researchers at Columbia University, thanks to a grant from the National Geographic Society. They had heard about them from a number of different media reports, but were finally able to confirm the presence of the quartzite, which is usually found in areas that have high temperatures and pressures, for themselves.

“This is contrary to plate tectonics,” said Cornelia Class, a geochemist at Columbia University, in a blog post. “Quartzite bodies do not belong on volcanic islands.”

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