
President Biden to host the leaders of Japan and Korean for an August summit at Camp David
President Joe Biden will host the leaders of Japan and South Korea next month for a summit at Camp David
2023-07-29 02:54

Analysis-After Munger's death, Berkshire succession comes into focus
By Jonathan Stempel The death of Berkshire Hathaway's Charlie Munger heralds the end of an era, leaving Warren
2023-11-29 14:27

Migrants on France's Channel coast undeterred by latest deaths
"Crossing the Channel, it's playing with our lives," Hajji...
2023-08-13 16:21

Scientists baffled after discovering that the Earth's core is 'leaking'
The name “core” suggests something hard and fixed but, it turns out, the Earth’s core is leaking. That is, at least, according to a team of top scientists, who drew the conclusion after analysing 62-million-old Arctic rocks. Geochemists from the California Institute of Technology and Woods Hole Oceanographic Institution detected record concentrations of helium 3 (3He) and helium 4 (4He) isotopes in the rocks, which suggest a slow trickle up from the very heart of our planet. They believe there could be reserves of the elusive gas buried some 2,900km underground. Helium is a surprisingly rare element on the Earth’s surface and experts have yet to establish just how much of it remains trapped deep beneath our feet. However, the new discovery has provided them with a fresh insight into the most mysterious region of our world. Understanding the presence of these helium isotopes could illuminate key processes in the core, such as how the Earth generated its life-protecting magnetic field. Most helium in the universe dates back to the Big Bang which occurred 13.8 billion years ago. The Earth swallowed up some of this as an infant planet, but mostly burped it all away during its 4.6 billion-year-long formation, as Science Alert reports. This means that any traces of helium found in volcanic rock – such as the samples unearthed in the Arctic – are believed to come either from pockets of mantle that are yet to release their helium, or from a vast, slow-leaking reserve. Basaltic lavas on Canada's Baffin Island contain some of the world's highest ratios of 3He to 4He, which geologists believe indicates that the gas's presence is not to do with the atmosphere, but rather the sign of deeper terrestrial origins. Several years ago, geochemist Forrest Horton uncovered helium isotope ratios of up to 50 times that of atmospheric levels in samples collected from Baffin's lava fields. This unusual concentration was also detected in lavas collected from Iceland. Horton and his team wondered if the helium in both samples may have derived from an ancient reservoir deep within the crust. And, it seems, their hunch may have been right. Their latest analysis – including specimens of the mineral olivine taken from dozens of sites across Baffin and surrounding islands – has delivered the highest ratio of 3He to 4He ever recorded in volcanic rock – measuring nearly 70 times anything previously detected in the atmosphere, as Science Alert notes. The team also considered ratios of other isotopes in order to rule out factors that may have altered the helium’s composition post-volcanic eruption, and found that the ratio of isotopes in the gas neon also matched the conditions present during the Earth’s formation. Despite advances in geology, the Earth’s core remains a great mystery, given that we have no way of directly exploring its core. The deepest hole humans have ever dug – branded the "entrance to hell" – extended an impressive 12,263m (40,230ft) down, but even that doesn’t come close to breaking through the crust to the layers beneath. Still, thanks to techniques like seismic tomography – which analyses how waves of energy travel through different materials during earthquakes – we’ve been able to map out the world’s interior. And carefully crafted simulations, based on the thermodynamics and pressures of our planet’s innards, suggest reserves of noble gases (like helium and neon) trapped in the core could have been protected as the Earth grew before seeping into the surrounding mantle over time. If the core is leaking, this could teach us a thing or two about how planets like ours form and how life, eventually, emerges. Sign up for our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings
2023-10-23 17:29

Andrew Tate labels Jordan Peterson 'childish' for supporting 'war' amid Israel-Palestine conflict, trolls call Top G a 'loser'
Peterson's call for Israeli Prime Minister Netanyahu to take a strong stance against Palestine was met with disapproval from Tate
2023-10-09 14:45

Tom Sandoval spotted talking on phone with Raquel Leviss amid breakup reports
Tom Sandoval's phone screen reportedly showed a call duration of over ten minutes
2023-05-30 06:29

Explainer-Is the Hollywood actors' strike over?
Hollywood's content factory could start humming again soon as studios and streamers on Wednesday reached a tentative agreement
2023-11-10 01:19

'Living for decades with painful memories': 'Gold Digger' star Julia Ormond sues Harvey Weinstein for alleged sexual assault in 1995
'I am humbled and grateful to all those who have risked speaking out,' said Julia Ormond
2023-10-05 06:53

Hovland sets Olympia Fields record with 61 to win BMW Championship
Viktor Hovland had the best round of his career at a good time
2023-08-21 06:20

Black and Latino students lack access to certified teachers and advanced classes, US data shows
America’s Black and Latino students were at a disadvantage in nearly every measure of education opportunity in the 2020-21 school year
2023-11-16 03:23

Young Diamondbacks Fan Robbed Spencer Steer of a Home Run Robbery
Impressive strength in doing so.
2023-08-27 01:59

Anthony Rizzo out of Yankees lineup with stiff neck for series opener in Seattle
New York Yankees first baseman Anthony Rizzo was held out of the lineup due to a stiff neck for their series opener against the Seattle Mariners
2023-05-30 08:59
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