Scientists compile new evidence that atolls are formed by cyclic changes in sea level — ScienceDaily

Marine geologist and oceanographer André Droxler knows Charles Darwin’s theory about atolls is incorrect. But Droxler, who’s studied coral reefs for more than 40 years, understands why Darwin’s model persists in textbooks, university lecture halls, natural science museums and Wikipedia entries.

“It’s so beautiful, so simple and pleasing that everybody still teaches it,” said Droxler, who recently retired from Rice University. “Every introductory book you can find in Earth science and marine science still has Darwin’s model. If they teach one thing about reefs or carbonates in marine science 101, they teach that model.”

Droxler, a professor of Earth, environmental and planetary sciences at Rice for 33 years, is hoping to set the record straight with a 37-page, tour de force paper about the origins of atolls. Published this month in the Annual Review of Marine Science, the paper was co-authored by Droxler and longtime collaborator Stéphan Jorry, a

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International research team solves theory of how diamonds formed inside protoplanets — ScienceDaily

It is estimated that over 10 million asteroids are circling the Earth in the asteroid belt. They are relics from the early days of our solar system, when our planets formed out of a large cloud of gas and dust rotating around the sun. When asteroids are cast out of orbit, they sometimes plummet towards Earth as meteoroids. If they are big enough, they do not burn up completely when entering the atmosphere and can be found as meteorites. The geoscientific study of such meteorites makes it possible to draw conclusions not only about the evolution and development of planets in the solar system but also their extinction.

A special type of meteorites are ureilites. These are fragments of a larger celestial body — probably a minor planet — which was smashed to pieces through violent collisions with other minor planets or large asteroids. Ureilites often contain large quantities of

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Facebook critics have formed their own oversight board

Several prominent Facebook critics have formed a rival oversight board that will scrutinize the company’s content moderation practices and other policies. The group is called the Real Facebook Oversight Board.



a close up of a sign: The thumbs up Like logo is shown on a sign at Facebook headquarters in Menlo Park, Calif., Tuesday, April 14, 2020. Facebook has deleted a post by President Donald Trump for the first time, saying it violated its policy against spreading misinformation about the coronavirus. The post in question featured a link to a Fox News video in which Trump says children are “virtually immune” to the virus. Facebook said Wednesday, Aug. 5, 2020 that the “video includes false claims that a group of people is immune from COVID-19 which is a violation of our policies around harmful COVID misinformation.” (AP Photo/Jeff Chiu)


The thumbs up Like logo is shown on a sign at Facebook headquarters in Menlo Park, Calif., Tuesday, April 14, 2020. Facebook has deleted a post by President Donald Trump for the first time, saying it violated its policy against spreading misinformation about the coronavirus. The post in question featured a link to a Fox News video in which Trump says children are “virtually immune” to the virus. Facebook said Wednesday, Aug. 5, 2020 that the “video includes false claims that a group of people is immune from COVID-19 which is a violation of our policies around harmful COVID misinformation.” (AP Photo/Jeff Chiu)

UK-based advocacy group The Citizens announced the committee one day after Facebook’s formal Oversight Board said it

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While Facebook works to create an oversight board, industry experts formed their own

Some of Facebook’s most vocal critics are tired of waiting for its independent oversight board — so they’re starting their own.



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A group of about 25 experts from academia, civil rights, politics and journalism announced Friday that they have formed a group to analyze and critique Facebook’s content moderation decisions, policies and other platform issues in the run-up to the presidential election and beyond.

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The group, which calls itself the Real Facebook Oversight Board, plans to hold its first meeting via Facebook Live on Oct. 1. It will be hosted by Recode founder Kara Swisher, a New York Times contributing opinion writer.

Facebook is still working on creating its own oversight board, first described in April 2018 by CEO Mark Zuckerberg as an independent “Supreme Court” for content moderation decisions. Facebook’s board won’t launch in time to make any decisions during the presidential

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