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When did plate tectonics begin? Scientists find new clues

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By Katie Hunt, CNN

(CNN) — The puzzle pieces of Earth’s rocky crust are slowly and steadily moving — a process known as plate tectonics. These dynamic movements helped to create the habitats and climate that fostered the emergence of life on our planet, but exactly when the geological process first emerged has been a matter of scientific contention for decades.

Now, scientists say they have found the earliest direct evidence of plate tectonics on Earth — the only known planet to have the geological process. The findings suggest that the phenomenon was already shaping the planet billions of years ago.

“Why do you have mountains? Why do you have oceans? It only makes sense with plate tectonics,” said Roger Fu, a professor of Earth and planetary sciences at Harvard University who led the research for a new study that was published in the journal Science on March 19. “So, trying to understand when it happened on early Earth is a fundamental question. It makes everything else make sense,” he said.

Today, Earth’s seven major and eight minor plates, which are on average 125 kilometers (about 80 miles) thick, move at a steady rate of several centimeters per year. Each plate is in motion, either pulling away from or growing closer to its neighbors, and volcanic activity and earthquakes typically cluster at these margins.

Some in the scientific community contend plate tectonics began 4.4 billion years ago while others suggest they only started in the last 1 billion. Whether modern plate tectonics arose directly from the hellish magma ocean that once covered early Earth or whether intermediate stages, such as plates that moved intermittently or one single, unbroken lid, were at play is also unclear, the study authors noted.

The latest research reveals the plates were shifting as early as 3.5 billion years ago — during the Archean Eon — when the planet was already home to early microbial life. In pushing back the timeline for active tectonic plates, the analysis could offer clues about Earth’s early history and the conditions that supported early life, according to the study.

Rocks capture Earth’s early history

Fu and his colleagues analyzed rock samples from East Pilbara Craton, a geological formation rich with fossil evidence of early organisms such as stromatolites, in Western Australia’s Pilbara region.

“If you don’t get too close, it actually looks like really friendly, beautiful scenery because it’s got these low rolling hills, but once you start walking around, you realize it’s, it’s full of very spiky grasses with sharp tips,” he said.

For their study, Fu and his colleagues harnessed a phenomenon called paleomagnetism. Magnetic minerals within rock record the inclination of Earth’s magnetic field lines at the moment they form, allowing scientists to infer the rocks’ original orientation and latitude.

“Our job was to basically measure these grains and see what the magnetic alignment of these rocks was,” Fu said. “You can take the angle between the observed magnetic field direction and the horizontal, and you can say are you near the poles or are you near the equator,” he explained.

By analyzing 900 rock samples collected from Pilbara that represented a 30 million-year time frame, the team found that part of the formation shifted in latitude from 53 degrees to 77 degrees — a drift of tens of centimeters annually over several million years — and rotated clockwise by more than 90 degrees.

The researchers also asse

Así será la nueva serie de Harry Potter en HBO: actores, fecha de estreno, temporadas y más

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Por Gonzalo Jiménez, CNN en Español

Siete libros. Ocho películas. Una obra de teatro. Más de dos decenas de videojuegos. Un parque temático. Pero el último formato que le faltaba a la historia de Harry Potter era una serie de TV. De allí la expectativa que está generando la nueva serie de televisión de HBO basada en los libros de J. K. Rowling prevista para estrenarse en 2027.

Suma al interés por ver al personaje en televisión un hecho cronológico: ya transcurrió más de una década desde que fue estrenada la última película basada en los libros originales, “Harry Potter and the Deathly Hallows: Part 2”, en 2011, por lo que hay una nueva generación de aficionados con interés en ver la historia contada nuevamente en pantalla.

Ayuda también que el formato seriado, con varios episodios por temporada, le calce mejor a la historia de los libros. Las películas de Harry Potter debían comprimir el argumento de una novela en dos o tres horas. Ahora, con la serie, cada libro podría disponer de un promedio de 10 horas para contar su historia. Los siete libros de Harry Potter suman 3.400 páginas y el más voluminoso de ellos es “Harry Potter and the Order of the Phoenix”, que tiene 766 páginas.

La nueva serie inició su rodaje el 14 de julio en los estudios Leavesden en Reino Unido y cuenta con Francesca Gardiner como showrunner. Gardiner fue productora de series como “Succession” y “Killing Eve”, así como de otra franquicia de fantasía, “His Dark Materials”, también para HBO. (HBO forma parte, al igual que CNN en Español, de Warner Bros Discovery).

HBO divulgó el martes 24 de marzo la primera imagen oficial de la serie, en una imagen que muestra de espaldas al actor Dominic McLaughlin como Harry Potter, vestido con el uniforme de Griffindor para jugar un partido de Quidditch.

La serie de televisión de Harry Potter estrenará en 2027, aún sin fecha específica determinada, en HBO y HBO Max.

La serie, anunciada en 2023, adaptará los siete libros de la saga Harry Potter, desde “Harry Potter and the Sorcerer’s Stone”, lanzado en 1997, hasta “Harry Potter and the Deathly Hallows”, pubicado en 2007.

En pocas palabras, la serie narrará la historia del joven mago Harry Potter mientras asiste al Colegio Hogwarts de Magia y Hechicería. Así que veremos cómo Harry, huérfano desde bebé, descubre al cumplir 11 años que es un mago y que se le conoce en el mundo mágico por haber sobrevivido al ataque del siniestro hechicero Lord Voldemort, quien mató a sus padres.

A lo largo de la historia Harry Potter hará amistad con Hermione Granger y Ron Weasley, quienes lo ayudarán en su inevitable enfrentamiento contra Lord Voldemort, que busca conquistar el mundo mágico y destruir a Harry. Es una historia que se apoya en un universo fantástico elaborado, lleno de detalles, con personajes secundarios interesantes y giros de argumento que mantienen en vilo al lector/espectador.

Casey Bloys, CEO de HBO Max, dijo al sitio web Deadline que la serie será “una adaptación fiel” de los libros y que el programa “profundizará en cada uno de los libros icónicos que los fans han seguido disfrutando durante todos estos años”.

Según The

Biden admin’s top civil rights lawyer joins NAACP as Trump attacks on voting rights escalate

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By Paula Reid, Casey Gannon, CNN

(CNN) — The former assistant attorney general for civil rights under President Joe Biden, Kristen Clarke, is joining the National Association for the Advancement of Color People (NAACP) as general counsel, according to the organization.

Clarke was previously the top civil rights lawyer at the Justice Department where she led the Civil Rights Division. Her move to the NAACP comes as the Justice Department under President Donald Trump has been redoubling its efforts around elections and voting rights.

“The move comes as the Trump Administration works to erode democratic institutions and dismantle civil rights protections. To meet the moment, the NAACP is expanding its own capabilities and ramping up its investment in its legal advocacy efforts by hiring the former senior Justice Department official to fight back,” the NAACP said in the news release about Clarke’s hire.

Clarke started her career at the Justice Department as a trial attorney for the civil rights division in 2000. In 2006, she was hired by the NAACP Legal Defense Fund to focus on the organization’s work with voting rights and election law. During her time at the NAACP, Clarke worked on several cases defending the Voting Rights Act.

She went on to work on civil rights issues for the state of New York and in courts across the country.

“The NAACP has stood on the front lines of justice for over a century, and I’m deeply honored to join this historic organization at this critical moment in our democracy,” Clarke said in a statement announcing her new role as NAACP general counsel.

The Justice Department’s Civil Rights Division is less active during Republican administrations, but the Trump administration has used it to reverse policies that promote diversity, equity and inclusion and enforce its own agenda.

As of last April, Clarke’s successor, Harmeet Dhillon, had slashed the Civil Rights Division by roughly 70% since assuming the role in order to prioritize goals of the Trump administration.

She said at the time she intended to replace those lawyers so the department could focus on efforts that included rooting out anti-Christian bias, antisemitism and what she called “woke ideology,” among other things.

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¿Quiénes han sido los latinos más detenidos en las fronteras de EE.UU. desde el regreso de Trump a la Casa Blanca?

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Por Uriel Blanco, CNN en Español

Desde su regreso a la Casa Blanca en enero de 2025, el Gobierno de Donald Trump implementó una campaña masiva contra la inmigración que ha tenido impactos profundos en el país. Detenciones, deportaciones, manifestaciones, violencia, heridos y muertos son algunos de los efectos de las medidas migratorias de esta administración.

Pero, además, la ofensiva contra la inmigración de Trump también ha reflejado sus consecuencias en sus fronteras. Entre la incertidumbre y el miedo, cada vez menos inmigrantes llegan tanto a las fronteras sur y norte de Estados Unidos, en comparación con lo visto en años pasados, cuando los encuentros de las autoridades fronterizas con inmigrantes se contaban por cientos de miles, incluso millones.

A pesar de la clara disminución en estas detenciones, miles de inmigrantes —en su mayoría latinos— han llegado a las fronteras de EE.UU. durante el segundo mandato de Trump.

Así como en las deportaciones, miles de latinos han sido detenidos por las autoridades fronterizas de la administración de Trump.

De hecho, los latinos —en especial los mexicanos— constituyen la mayoría de los detenidos (o “encuentros”, como los llama el Gobierno de EE.UU.) por las autoridades fronterizas en el segundo mandato de Trump.

Según estadísticas de la Oficina de Aduanas y Protección Fronteriza (CBP, por sus siglas en inglés), entre enero de 2025 y febrero de 2026, el Gobierno de EE.UU. ha registrado 452.865 encuentros con inmigrantes en las fronteras sur y norte de Estados Unidos.

Ahora bien, de ese total, la nacionalidad que más prevalece por mucho es la mexicana, superando por casi cuatro veces al segundo lugar, que es la nacionalidad canadiense.

Lo anterior es una consecuencia lógica si tomamos en cuenta que México y Canadá son los países que hacen frontera con Estados Unidos. De los 452.865 encuentros, alrededor del 44 % fueron en la frontera sur, el 15 % en la frontera norte y el resto en otras áreas del país donde opera la CBP.

Países de Asia como China, Filipinas y la India ocupan lugares importantes en el top 10, pero la mayor parte de posiciones en el listado corresponde a nacionalidades de América Latina y el Caribe.

  • Mexicanos: 140.115 encuentros de enero de 2025 a febrero de 2026
  • Canadienses: 36.791
  • Indios: 29.926
  • Chinos: 29.232
  • Filipinos: 28.774
  • Guatemaltecos: 22.024
  • Venezolanos: 16.818
  • Hondureños: 16.325
  • Colombianos: 9.305
  • Cubanos: 8.251

Si bien en el segundo mandato de Trump continúan llegando miles de personas a las fronteras estadounidenses, no se aproximan a las olas migrantes que registró EE.UU. en el Gobierno de Joe Biden.

La administración de Trump ha destacado la drástica reducción de encuentros en las fronteras como uno de sus logros de Gobierno. Tan solo hace unos días, el Departamento de Seguridad Nacional informó que EE.UU. acaba de hilar 10 meses sin migrantes dejados en libertad en las fronteras. Esto quiere decir que a todos los migrantes detenidos por las autoridades fronterizas se les ha negado el ingreso a Estados Unidos.

Mientras que en los primeros 14 meses del segundo mandato de Trump hubo 452.865 encuentros de migrantes con las autoridades fronterizas, en los últimos 14 meses de Biden en la Casa Blanca —de noviembre de 2024 a diciembre de 2025— se registraron 2.984.314, es decir, casi siete veces más con Biden

Why Britain’s miserable weather is one of its greatest tourist attractions

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By Will Noble, CNN

(CNN) — Britain is far from the wettest place on Earth, but its reputation as a gray landscape populated by perma-sodden umbrella-clutchers is so longstanding, it’s seeped into the national identity.

“It’s raining cats and dogs” was a phrase muttered by Brits as far back as the 17th century, when torrential showers dislodged animal corpses from the rudimentary drainage systems, washing them down the streets.

It was still being muttered earlier this year, when the UK endured a particularly soggy start to 2026.

When it comes to annual average precipitation however, it ranks just 83rd in the world, behind the likes of Colombia, the Maldives, Jamaica and New Zealand, but more than the United States.

However, while other countries battle extremes of downpours and drought, in Britain the rain hits different.

“The Atlantic Ocean, providing lots of moisture, has a huge influence on our weather,” explains Liz Bentley, chief executive of the Royal Meteorological Society. Britain’s also slap-bang in the path of a jet stream, a band of fast-moving winds “that develops weather systems of cloud and rain, and steers them towards our shores.”

In short, it might rain any time, any place, and perhaps it is this unpredictability — the sense of rain always lurking around the corner — that has caused it to saturate the national consciousness: from painter J.M.W. Turner’s invigoratingly kinetic “Rain, Steam, and Speed – The Great Western Railway” (worth visiting in London’s National Gallery on any given drizzly afternoon), to Travis’ pop anthem, “Why Does It Always Rain On Me?”, a song that neatly sums up the eye-rolling lot of the Brit.

Dressing for the elements

Of all the vignettes of Britain in the rain, however, perhaps it is that of the umbrella — hurriedly opened as showers break over the Wimbledon tennis championships each July, and used as an aerial conveyance by Mary Poppins — that endures.

Fox Umbrellas, based in Croydon, South London, has been crafting umbrellas since 1868, currently producing 20,000 to 25,000 a year — some of which you’ve likely seen on screen in shows such as “Outlander,” “The Crown” or “Peaky Blinders.”

“Many people view our island as somewhere that gets a lot of rain,” says Fox Umbrellas’ managing Director Paul Garrett, “and I guess we can’t argue that — so we are experts in staying dry.”

Many view the umbrella as a “quintessentially British item,” he says. In Victorian times, a gentleman wasn’t properly dressed if he wasn’t wearing a bowler hat and carrying an umbrella, he adds, although today more casual dress has taken over.

Events such as Royal Ascot, the annual week of horse racing that is a highlight of the upper-class social calendar each June, is a chance to see “well-dressed individuals, with many carrying an umbrella in case of inclement weather,” says Garrett. There is still a need for an umbrella in the modern world.”

Overseas visitors often wish to buy into this culture. “We get many tourists who value the importance of functionality and elegance of an umbrella to go with their attire,” says Garrett. “We do get visitors from other countries that specifically come to see us to order a bespoke umbrella and can spend a lot of time choosing each detail.”

Not only have the Brits woven their tenaciously wet weather into cultural emblems, these are often industries in their own right; look at Burberry, the luxury fashion house with Victorian roots, whose rain-shielding trench coatsRead more

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