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11 - 20 from 200 . In "Life / Explore"
A 3D illustration of Earth with a slice cut out revealing the layers including the core
Earth's inner core may have changed shape, say scientists
LONDON — The inner core of Earth may have changed shape in the past 20 years, according to a group of scientists.The inner core is usually thought to be shaped like a ball, but its edges may actually have deformed by 100m or more in height in places, according to Prof John Vidale who led the research.Earth's core is the beating heart of our planet as it produces a magnetic field that protects life from burning up in the Sun's radiation.The inner core spins independently from the liquid outer core and from the rest of the planet. Without this motion, Earth would die and become more like barren Mars which lost its magnetic field billions of years ago.The change in shape could be happening where the edge of the solid inner core touches the extremely hot liquid metal outer core.The...
February 11, 2025

Earth's inner core may have changed shape, say scientists

A vein of sodium carbonate appears like needles, falsely colored in purple to show detail, within the clay-rich rock of the Bennu sample. Each needle is less than 1 micrometer wide
Asteroid sample reveals ‘building blocks of life are in fact extraterrestrial in origin’ 
WASHINGTON — Researchers have detected organic compounds and minerals necessary for life in unprecedented samples collected from the near-Earth asteroid Bennu, adding evidence to the idea that asteroids likely delivered the building blocks of life to our planet early in its history.The samples are also providing a window into understanding what kind of chemical and biological processes were already underway as space rocks chaotically ricocheted around during the early days of the solar system.Preliminary analyses of the rock and dust samples released within the past year have shown that the asteroid contained water as well as carbon, nitrogen and other organic matter, but the chemical composition of the organic material was largely unknown.Now, new research has revealed the asteroid...
January 30, 2025

Asteroid sample reveals ‘building blocks of life are in fact extraterrestrial in origin’ 

Portugal saw a 26% increase in visitors in 2024
1.4 billion people traveled internationally in 2024 as tourism returns to pre-pandemic highs
MADRID — Feel like airport security lines keep getting longer, or that you’re booking hotel reservations way further in advance than you used to?It’s true. The UN’s World Tourism Organization (UNWTO) has just released its 2024 year-in-review data, confirming that the tourism industry has bounced back from the pandemic.About 1.4 billion people traveled internationally last year, which is 99% of the number who did the same in 2019, the last full year before Covid-19 hit the world.That amounted to $1.9 trillion being spent in the tourism industry, meaning each tourist spent more than $1,000 per person on average.But where did people go?Overall, Europe was the most-visited continent with 747 million tourists in 2024, according to the UNWTO.That number was especially impressive...
January 23, 2025

1.4 billion people traveled internationally in 2024 as tourism returns to pre-pandemic highs

The meteorite that struck the front walkway of Joe Velaidum's home in Canada left a star-shaped pattern of debris on the pavement
Doorbell camera catches rare footage of meteorite striking home’s front walkway
EDMONTON, Canada — It was a simple, sunny afternoon on Canada’s Prince Edward Island as Joe Velaidum and his partner, Laura Kelly, set off to walk their dog. Noticing a stray leash lying in the yard, Velaidum briefly stopped to pick it up before setting off on a quick walk.Minutes later, a meteorite pummeled the walkway — exactly where Velaidum had been standing — and a Ring doorbell camera captured the entire incident on video.“I never stop on that spot — ever,” Velaidum told CNN about the incident, which occurred in July 2024. “And looking back on it now, we noticed, because of the video, if I had stayed on that very spot for just two minutes longer, I absolutely would have been struck and probably killed by this meteor.”Months later, after undergoing lab analysis that...
January 23, 2025

Doorbell camera catches rare footage of meteorite striking home’s front walkway

The Indus script consists of signs and symbols, primarily found on stone seals like this one
A million-dollar challenge to crack the script of early Indians
WASHINGTON — Every week, Rajesh PN Rao, a computer scientist, gets emails from people claiming they've cracked an ancient script that has stumped scholars for generations.These self-proclaimed codebreakers — ranging from engineers and IT workers to retirees and tax officers — are mostly from India or of Indian origin living abroad. All of them are convinced they've deciphered the script of the Indus Valley Civilisation, a blend of signs and symbols."They claim they've solved it and that the 'case is closed'," says Rao, Hwang Endowed Professor at the University of Washington and author of peer-reviewed studies on the Indus script.Adding fuel to the race, MK Stalin, the chief minister of southern India's Tamil Nadu state, recently upped the stakes,...
January 17, 2025

A million-dollar challenge to crack the script of early Indians

A royal Bengal tiger on a dirt road in the jungle in Chitwan National Park in Nepal
Nepal's leader says it has too many tigers
KATHMANDU — Nepal has been celebrated globally for tripling its tiger population in a decade — but Prime Minister KP Sharma Oli thinks the country may have been too successful."In such a small country, we have more than 350 tigers... We can't have so many tigers and let them eat up humans," he said last month at an event organized to review the country's COP29 outcomes.Attacks by tigers claimed nearly 40 lives and injured 15 people between 2019 and 2023, according to government data. But local communities say the figure is much higher."For us, 150 tigers are enough," Oli declared in December, even suggesting that Nepal could send its prized big cats to other countries as gifts.How many tigers are too many? There is no one answer, experts say. It depends on...
January 17, 2025

Nepal's leader says it has too many tigers

The comet was seen from the International Space Station over the weekend
Rare comet may be visible for first time in 160,000 years
WASHINGTON — A bright comet could be visible in skies across the globe over the coming days for the first time in 160,000 years.Nasa said the future brightness of a comet is "notoriously hard" to predict, but that Comet C/2024 G3 (Atlas) could remain bright enough to be seen by the naked eye.On Monday, the comet was at perihelion, the point at which it is closest to the Sun, which influences how bright it appears. Experts say it could be visible from Monday night.While the exact locations for possible visibility are unknown, experts believe the comet, which could shine as bright as Venus, may be best observed from the southern hemisphere.The comet was spotted last year by Nasa's Asteroid Terrestrial-impact Last Alert System.Dr Shyam Balaji, a researcher in astroparticle...
January 14, 2025

Rare comet may be visible for first time in 160,000 years

The A23a iceberg had been spinning on the same spot for months
World’s biggest iceberg, A23a, is on the move again
LONDON — The world’s largest iceberg is on the move again, drifting through the Southern Ocean after months stuck spinning on the same spot, scientists from the British Antarctic Survey (BAS) have said.Spanning an area of 3,672 square kilometers (1,418 square miles) when measured in August – slightly bigger than Rhode Island – the A23a iceberg has been carefully tracked by scientists ever since it calved from the Filchner-Ronne ice shelf in 1986.It remained grounded on the Antarctic’s Weddell Sea floor for more than 30 years, probably until it shrank just enough to loosen its grip on the seafloor.Then, the iceberg was carried away by ocean currents before it became stuck again in a Taylor column – the name given to a spinning vortex of water caused by ocean currents hitting an...
December 17, 2024

World’s biggest iceberg, A23a, is on the move again

This humpback whale, photographed here off the Pacific coast of Colombia, made an epic migration
Whale makes epic migration, astonishing scientists
LONDON — A humpback whale has made one of the longest and most unusual migrations ever recorded, possibly driven by climate change, scientists say.It was seen in the Pacific Ocean off Colombia in 2017, then popped up several years later near Zanzibar in the Indian Ocean — a distance of at least 13,000 km.The experts think this epic journey might be down to climate change depleting food stocks or perhaps an odyssey to find a mate.Ekaterina Kalashnikova of the Tanzania Cetaceans Program said the feat was "truly impressive and unusual even for this highly migratory species".The photograph below shows the same whale photographed in 2022, off the Zanzibar coast.Dr Kalashnikova said it was very likely the longest distance a humpback whale had ever been recorded traveling.Humpback...
December 11, 2024

Whale makes epic migration, astonishing scientists

Nasa astronauts Reid Wiseman, Victor Glover, Christina Hammock Koch and Jeremy Hansen
Nasa delays astronaut flight around the Moon
WASHINGTON — US space agency Nasa has announced a further delay to its plans to send astronauts back to the Moon.The agency's chief, Bill Nelson, said the second mission in the Artemis program was now due for launch in April 2026.The plan had been to send astronauts around the Moon but not land in September 2025. The date had already slipped once before, from November of this year.That will mean that a Moon landing will not take place until at least 2027, a year later than originally planned.The delay is needed to fix an issue with the capsule's heat shield, which returned from the previous test flight excessively charred and eroded, with cracks and some fragments broken off.Nelson told a news conference that "the safety of our astronauts is our North Star"."We do...
December 06, 2024

Nasa delays astronaut flight around the Moon

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