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Defense Bill Will Make D.C. Skies Less Safe, N.T.S.B. Chair Says

The chair of the National Transportation Safety Board warned that a provision in the new defense bill would worsen the risk of midair collisions near the Washington-area airport where a deadly crash in January killed 67 people.

© Kenny Holston/The New York Times

Jennifer Homendy, the N.T.S.B. chair, said she would be concerned about the safety of flying in Washington’s airspace if the provision became law.
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Man Admits to Strangling Pregnant Woman in 1996, Settling Cold Case

Gregory Fleetwood, 69, pleaded guilty to manslaughter on Wednesday in the killing of 36-year-old Jasmine Porter. He is expected to be sentenced to 12 years in prison.

© Jefferson Siegel for The New York Times

Gregory Fleetwood, right, pleaded guilty in State Supreme Court in the Bronx on Wednesday, three years after his arrest in the 1996 killing.
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Nasa loses contact with spacecraft orbiting Mars for more than a decade

Space agency is investigating after Maven abruptly stopped communicating to ground stations over the weekend

Nasa has lost contact with a spacecraft that has orbited Mars for more than a decade, though the US space agency said it was trying to re-establish a communications link.

Maven abruptly stopped communicating to ground stations over the weekend. Nasa said this week that the spacecraft had been working fine before it went behind the red planet. When it reappeared, there was only silence. “Telemetry showed all subsystems working normally before it orbited behind [Mars],” Nasa said in a statement.

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© Photograph: NASA/GSFC

© Photograph: NASA/GSFC

© Photograph: NASA/GSFC

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OpenAI accusé d’autocensure : des chercheurs jettent l’éponge face à la mise en retrait des études critiques sur l’IA

Des dissensions internes secouent aujourd’hui l’un des géants de l’intelligence artificielle. Plusieurs chercheurs affirment en effet qu’OpenAI freine la publication de ses travaux les plus alarmants – notamment ceux consacrés aux effets néfastes de l’IA – , ce qui aurait entrainé le départ de plusieurs scientifiques. Quand la …

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L’article OpenAI accusé d’autocensure : des chercheurs jettent l’éponge face à la mise en retrait des études critiques sur l’IA est apparu en premier sur KultureGeek.

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OpenAI accusé d’autocensure : des chercheurs jettent l’éponge face à la mise en retrait des études critiques sur l’IA

Des dissensions internes secouent aujourd’hui l’un des géants de l’intelligence artificielle. Plusieurs chercheurs affirment en effet qu’OpenAI freine la publication de ses travaux les plus alarmants – notamment ceux consacrés aux effets néfastes de l’IA – , ce qui aurait entrainé le départ de plusieurs scientifiques. Quand la …

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L’article OpenAI accusé d’autocensure : des chercheurs jettent l’éponge face à la mise en retrait des études critiques sur l’IA est apparu en premier sur KultureGeek.

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Colliding space debris produces radio bursts, raising prospect of ‘debris weather’ alerts

The space environment is peppered with space debris, some fragments too small to see with current systems, but energetic enough to pose a severe hazard to operational spacecraft. Credit: credit: The Aerospace Corporation’s Space Safety Institute

GOLDEN, CO — A university team has found that small orbital debris could emit radio bursts as they collide or approach each other in space. The signal can be detected with large radio dishes on Earth, as well as satellites in orbit.  This new intelligence agency-funded research is focused on gauging the interaction of orbital debris […]

The post Colliding space debris produces radio bursts, raising prospect of ‘debris weather’ alerts appeared first on SpaceNews.

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A dead whale shows up on your beach. What do you do with the 40-ton carcass?

A fin whale washed ashore in Anchorage and was left there for months. Then a self-described ‘wacko’ museum director made a plan

When a whale dies, its body descends to the bottom of the deep sea in a transformative phenomenon called a whale fall. A whale’s death jump-starts an explosion of life, enough to feed and sustain a deep-ocean ecosystem for decades.

There are a lot of ways whales can die. Migrating whales lose their way and, unable to find their way back from unfamiliar waters, are stranded. They can starve when prey disappears or fall to predators such as orcas. They become bycatch, tangled in fishing lines and nets. Mass whale deaths have been linked to marine heatwaves and the toxic algae blooms that follow.

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© Photograph: Hasan Akbas/Anadolu via Getty Images

© Photograph: Hasan Akbas/Anadolu via Getty Images

© Photograph: Hasan Akbas/Anadolu via Getty Images

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Humans made fire 350,000 years earlier than previously thought, discovery in Suffolk suggests

Groundbreaking find makes compelling case that humans were lighting fires much earlier than originally believed

Humans mastered the art of creating fire 400,000 years ago, almost 350,000 years earlier than previously known, according to a groundbreaking discovery in a field in Suffolk.

It is known that humans used natural fire more than 1m years ago, but until now the earliest unambiguous example of humans lighting fires came from a site in northern France dating from 50,000 years ago.

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© Photograph: Aleksei Gorodenkov/Alamy

© Photograph: Aleksei Gorodenkov/Alamy

© Photograph: Aleksei Gorodenkov/Alamy

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Une étude choc montre que l’usage intensif des réseaux sociaux affaiblit les capacités cognitives des adolescents

C’est un second coup de semonce après les conclusions d’un travail de recherche  du MIT : une vaste du JAMA met en lumière un constat inquiétant : plus les adolescents passent de temps sur les réseaux sociaux, plus leurs capacités cognitives tendent à diminuer. Mémoire, vocabulaire, compréhension orale… …

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L’article Une étude choc montre que l’usage intensif des réseaux sociaux affaiblit les capacités cognitives des adolescents est apparu en premier sur KultureGeek.

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Une étude choc montre que l’usage intensif des réseaux sociaux affaiblit les capacités cognitives des adolescents

C’est un second coup de semonce après les conclusions d’un travail de recherche  du MIT : une vaste du JAMA met en lumière un constat inquiétant : plus les adolescents passent de temps sur les réseaux sociaux, plus leurs capacités cognitives tendent à diminuer. Mémoire, vocabulaire, compréhension orale… …

Lire la suite

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L’article Une étude choc montre que l’usage intensif des réseaux sociaux affaiblit les capacités cognitives des adolescents est apparu en premier sur KultureGeek.

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Elon Musk’s SpaceX ‘preparing for flotation that could value it at over $1tn’

Reports say space exploration company has begun talks about stock market listing that could raise more than $25bn

Elon Musk’s space exploration company SpaceX is preparing to list on the stock market next year in a move that could raise more than $25bn (£19bn) and value the business at more than $1tn, according to reports.

SpaceX, which designs, builds and launches rockets, is said to have started discussions with banks about an initial public offering (IPO). It could join the stock market in about June or July, according Reuters, which cited an unnamed source familiar with the matter.

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© Photograph: Manuel Mazzanti/NurPhoto/Shutterstock

© Photograph: Manuel Mazzanti/NurPhoto/Shutterstock

© Photograph: Manuel Mazzanti/NurPhoto/Shutterstock

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