Science & Technology
Satellite imagery shows Antarctic ice shelf crumbling faster than thought
Antarctica’s coastal glaciers are shedding icebergs more rapidly than nature can replenish the crumbling ice, doubling previous estimates of losses from the world’s largest ice sheet over the past 25 years, a satellite analysis showed on Wednesday.
The first-of-its-kind study, led by researchers at NASA’s Jet Propulsion Laboratory (JPL) near Los Angeles and published in the journal Nature, raises new concern about how fast climate change is weakening Antarctica’s floating ice shelves and accelerating the rise of global sea levels, Reuters reported.
The study’s key finding was that the net loss of Antarctic ice from coastal glacier chunks “calving” off into the ocean is nearly as great as the net amount of ice that scientists already knew was being lost due to thinning caused by the melting of ice shelves from below by warming seas.
Taken together, thinning and calving have reduced the mass of Antarctica’s ice shelves by 12 trillion tons since 1997, double the previous estimate, the analysis concluded.
The net loss of the continent’s ice sheet from calving alone in the past quarter-century spans nearly 37,000 sq km, an area almost the size of Switzerland, according to JPL scientist Chad Greene, the study’s lead author.
“Antarctica is crumbling at its edges,” Greene said in a NASA announcement of the findings. “And when ice shelves dwindle and weaken, the continent’s massive glaciers tend to speed up and increase the rate of global sea level rise.”
The consequences could be enormous. Antarctica holds 88% of the sea level potential of all the world’s ice, he said.
Ice shelves, permanent floating sheets of frozen freshwater attached to land, take thousands of years to form and act like buttresses holding back glaciers that would otherwise easily slide off into the ocean, causing seas to rise.
When ice shelves are stable, the long-term natural cycle of calving and re-growth keeps their size fairly constant.
In recent decades, though, warming oceans have weakened the shelves from underneath, a phenomenon previously documented by satellite altimeters measuring the changing height of the ice and showing losses averaging 149 million tons a year from 2002 to 2020, according to NASA.
The losses measured from calving outpaced natural ice shelf replenishment so greatly that researchers found it unlikely Antarctica can return to pre-2000 glacier levels by the end of this century.
The accelerated glacial calving, like ice thinning, was most pronounced in West Antarctica, an area hit harder by warming ocean currents. But even in East Antarctica, a region whose ice shelves were long considered less vulnerable, “we’re seeing more losses than gains,” Greene said.
One East Antarctic calving event that took the world by surprise was the collapse and disintegration of the massive Conger-Glenzer ice shelf in March, possibly a sign of greater weakening to come, Greene said.
Science & Technology
Afghanistan launches first 5G trial in Kabul to boost telecom services
According to ministry spokesperson Enayatullah Alokozai, AWCC has upgraded 74 telecom antennas in Kabul to 5G on a trial basis.
Afghanistan has launched its first-ever 5G telecommunications trial in Kabul, marking a major milestone in efforts to modernise the country’s digital infrastructure.
The announcement followed a meeting between Hamdullah Nomani, Minister of Communications and Information Technology, and Aliullah Sarwari, head of the Afghan Wireless Communication Company (AWCC), where discussions focused on expanding telecom coverage, improving service quality, and extending connectivity to remote regions.
According to ministry spokesperson Enayatullah Alokozai, AWCC has upgraded 74 telecom antennas in Kabul to 5G on a trial basis. Once technical preparations and testing are completed, the company plans to extend 5G services to other provinces.
Officials also reported steady progress on broader infrastructure development. Eight telecom sites approved during previous official visits to northern and southeastern provinces have been completed, one is nearing completion, and construction continues on two additional sites expected to become operational soon.
In parallel, the Afghanistan Telecom Regulatory Authority (ATRA) has approved eight more telecom sites under the Telecom Development Fund (TDF), with implementation scheduled in the coming months.
Sarwari noted that since the beginning of 2026, AWCC has built and activated 46 telecom sites using its development budget, while work continues on a further 186 sites nationwide.
He also thanked the Ministry of Communications and Information Technology for its ongoing support in facilitating sector growth and improving service delivery.
Nomani meanwhile emphasised that telecommunications play a crucial role in national development and said the government remains committed to working closely with operators to expand modern, high-quality digital services.
Officials added that cooperation between the ministry, regulators, and telecom companies will continue across all operational and regulatory areas to strengthen Afghanistan’s communications network.
Science & Technology
NASA set for first crewed moon return in over half a century
NASA is preparing to launch the first crew of astronauts toward the moon in over 53 years with its second Artemis mission, a key test flight in humanity’s broader lunar goals as the U.S. races to reassert leadership in space faced with growing competition from China.
Three U.S. and one Canadian astronaut are due for liftoff aboard NASA’s Orion capsule and Space Launch System rocket on Wednesday for a 10-day test mission swinging around the moon and back, a winding journey taking them deeper into space than humans have ever gone before, Reuters reported.
The mission is the first crewed test flight in NASA’s Artemis program, the flagship U.S. effort to begin regular flights to the moon, at an estimated cost of at least $93 billion since 2012. Not since Apollo 17 in 1972 have humans touched down on the moon’s surface, a tricky feat NASA aims to repeat in 2028 at the rugged lunar south pole.
The U.S. is the only country to have put humans on another celestial body with its six lunar landings of the Apollo program, driven by competition with the former Soviet Union.
China, a formidable technological rival to the U.S., has made steady progress in its own moon program in recent years, with a string of robotic lunar landings and a 2030 goal to put its own crew on the surface. U.S. officials have focused on beating China to the surface.
ANSWERING ‘THE QUESTION OF OUR LIFETIME’
NASA astronaut Christina Koch, Artemis II mission specialist, on Sunday said the moon is a “witness plate” to the solar system’s formation, and a stepping stone to Mars, “where we might have the most likelihood of finding evidence of past life.”
“Many, many countries have recognized the value that there is in exploring further into the solar system, to the moon and on to Mars,” she told reporters. “They recognize that not only can we gain all these extremely tangible benefits, but that we have the opportunity to answer the question that could be the question of our lifetime, which is, are we alone?”
“Answering that question starts at the moon,” she said. “The question is not should we go, but should we lead, or should we follow?”
Through a series of increasingly advanced Artemis missions extending into the next decade, the U.S. aims to set precedent for how others will operate and coexist on the moon’s surface, where someday countries and companies can exploit rocky lunar resources and practice for much more difficult missions to Mars.
COMMERCIAL LUNAR MARKET
NASA is relying on an array of companies in its moon program with the hope of stimulating a commercial lunar market in the future, the value of which is hard to estimate, analysts say.
A PricewaterhouseCoopers report from January estimates $127 billion in revenues by 2050 from lunar surface activities, with investments potentially reaching $72 billion to $88 billion through the same period.
But for now, and in the near future, governments will drive companies’ lunar strategies and revenue. It will be a long time before commercial growth exists on the moon independently of government funding, said Akhil Rao, an economist at analysis firm Rational Futures who was a research economist at NASA.
“NASA did not see a short-run economic value that companies would be able to derive that would allow NASA to be hands-off,” said Rao, who was among a team of economists and space policy staff laid off last year amid the Trump administration’s sweeping federal workforce cuts.
The Artemis II mission will pose a greater test of NASA’s Orion capsule and SLS, which conducted a similar mission without crew in 2022. The astronauts on board will test critical life-support systems, crew interfaces, navigation and communications before NASA proceeds with more complex missions in the following years.
Liftoff is scheduled for April 1, though it could happen any day after until April 6, depending on weather conditions in Florida and any last-minute snags with the rocket. Thereafter, another launch window, determined largely by the orbital mechanics between Earth and the moon, opens on April 30.
Artemis III, the next mission planned for 2027, will involve the Orion capsule docking in Earth’s orbit with NASA’s two lunar landers – the Blue Moon system from Jeff Bezos’ Blue Origin and Starship from Elon Musk’s SpaceX. The delicate tag-up will demonstrate how the landers will pick up astronauts before heading for the moon’s surface.
That mission was added to the program in February by NASA’s new administrator, Jared Isaacman, a billionaire private astronaut who has more broadly shaken up the program with new objectives. His decision pushed the program’s first crewed lunar landing to Artemis IV.
The architecture is more complex than the Apollo missions, involving an array of companies funded by NASA with the hope of stimulating private competition and market activity around the moon. Boeing and Northrop Grumman lead SLS and Lockheed Martin builds Orion for NASA.
SpaceX and Blue Origin are developing their own landers with NASA funding but under different types of contracts that allow them to offer the spacecraft to other customers.
Science & Technology
Trump administration set to receive $10 billion fee for brokering TikTok deal, WSJ reports
Vice President JD Vance had in September said that the new U.S. company will be valued at around $14 billion.
President Donald Trump’s administration is set to receive a roughly $10 billion fee from investors in the recently completed deal to take control of TikTok’s U.S. business, the Wall Street Journal reported on Friday, citing people familiar with the matter.
TikTok’s Chinese owner, ByteDance, in January finalized a deal to establish a majority American-owned joint venture that will secure U.S. data, to avoid a U.S. ban on the short video app used by over 200 million Americans.
TikTok USDS Joint Venture LLC will secure U.S. user data, apps and algorithms through data privacy and cybersecurity measures. It disclosed few details about the divestiture.
Vice President JD Vance had in September said that the new U.S. company will be valued at around $14 billion.
The payment is part of the agreement through which investors friendly with the administration gained control of TikTok’s U.S. operations from ByteDance, WSJ said. It is on top of the investments already made to establish a new entity to operate the app in the U.S.
Investors Oracle (ORCL.N), Silver Lake, Abu Dhabi’s MGX and other backers paid about $2.5 billion to the Treasury Department when the deal closed and are to make a number of subsequent payments until the total reaches $10 billion, per the Journal.
TikTok and the White House did not immediately respond to Reuters requests for comment.
Officials from the administration have said the fee is justified, citing Trump’s role in rescuing TikTok’s U.S. operations and guiding negotiations with China to complete the deal while tackling lawmakers’ concerns over national security, according to WSJ.
Earlier this month, Trump and U.S. Attorney General Pam Bondi were sued by retail investors in two social media rivals of TikTok seeking to reverse the U.S. president’s approval of a deal by the company’s Chinese owner ByteDance to form a majority American-owned joint venture.
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