Some of the first humans to arrive in the Americas included people from what is now China, who arrived in two distinct migrations during and after the last ice age, a new genetics study has found. “Our findings indicate that besides the previously indicated ancestral sources of Native Americans in Siberia, the northern coastal China also served as a genetic reservoir contributing to the gene pool,” said Yu-Chun Li, one of the report authors. Li added that during the second migration, the same lineage of people settled in Japan, which…
Tag: Science
Air pollution spikes linked to irregular heartbeats, study finds
Spikes in air pollution increase the risk of cardiac arrhythmias, a large study has found. The research, based on nearly 200,000 hospital admissions in China, found a significant increase in risk of arrhythmias in the first few hours after an increase in air pollution levels. Heart arrhythmias can increase the risk of heart disease and sudden cardiac death. “We found that acute exposure to ambient air pollution was associated with increased risk of symptomatic arrhythmia,” said Dr Renjie Chen of Fudan University in Shanghai. “The risks occurred during the first…
Newly released Chinese Covid data points to infected animals in Wuhan
Newly released data from early in the Covid-19 pandemic has offered a crucial insight into the outbreak’s origins, suggesting that Covid-infected animals were present at a market in Wuhan and could have been a “potential source of human infections”. A pre-print report on Monday by a team of international researchers fleshed out analysis of previously unseen genomic samples collected by Chinese scientists at the Huanan market in Wuhan in the early days of the pandemic. Initially leaked last week after a meeting of the World Health Organization (WHO) committee studying…
Australia news live: total fire bans in parts of Victoria, NSW and SA amid autumn heat blast
<gu-island name="KeyEventsCarousel" deferuntil="visible" props="{"keyEvents":[{"id":"6414e8df8f089504f3596e3a","elements":[{"_type":"model.dotcomrendering.pageElements.TextBlockElement","html":" Early voting centres have opened this morning across NSW ahead of the state election’s official polling day next Saturday. ","elementId":"23dbfb3a-0756-4d69-bff3-97da39f2c947"},{"_type":"model.dotcomrendering.pageElements.TweetBlockElement","html":" Early voting is open for the 2023 NSW State election. To view the eligibility criteria, and early voting centre locations and opening times visit: https://t.co/oaFDmOvgb2 pic.twitter.com/u4JiQTKlqK — NSW Electoral Commission (@NSWElectoralCom) March 17, 2023 ","url":"https://twitter.com/NSWElectoralCom/status/1636849897096765442?s=20","id":"1636849897096765442","hasMedia":false,"role":"inline","isThirdPartyTracking":false,"source":"Twitter","elementId":"e55ec751-6f7d-4691-b644-4f8a7abf1b4e"},{"_type":"model.dotcomrendering.pageElements.TextBlockElement","html":" AAP reports that NSW electoral commissioner John Schmidt expects the early voting centres will see strong demand in the run-up to the day of reckoning on 25 March. ","elementId":"f7cafb73-4c34-432f-83fc-0f79489e7254"},{"_type":"model.dotcomrendering.pageElements.TextBlockElement","html":" The state…
New data links Covid-19’s origins to raccoon dogs at Wuhan market
Newly released genetic data gathered from a live food market in Wuhan has linked Covid-19 with raccoon dogs, adding weight to the theory that infected animals sold at the site started the coronavirus pandemic, researchers involved in the work say. Swabs collected from stalls at the Huanan seafood market in the two months after it was shut down on 1 January 2020 were previously found to contain both Covid and human DNA. When the findings were published last year, Chinese researchers stated that the samples contained no animal DNA. That…
‘Gargantuan’: China fossils reveal 70-tonne dinosaur had 15-metre neck
A dinosaur that roamed east Asia more than 160m years ago has been named a contender for the animal with the longest neck ever known. A new analysis of bones from the beast’s neck and skull revealed that the dinosaur, known as Mamenchisaurus sinocanadorum, sported a neck 15metres long, or one-and-a-half times the length of a doubledecker bus. The fossilised remains of the creature were recovered in 1987 from 162 million-year-old rocks in the Xinjiang Uyghur Autonomous Region of north-west China, but the full length of the animal’s neck was…
1,100 scientists and students barred from UK amid China crackdown
More than 1,000 scientists and postgraduate students were barred from working in the UK last year on national security grounds, amid a major government crackdown on research collaborations with China. Figures obtained by the Guardian reveal that a record 1,104 scientists and postgraduate students were rejected by Foreign Office vetting in 2022, up from 128 in 2020 and just 13 in 2016. The sharp increase follows a hardening of the government’s stance on scientific ties with China, with warnings from MI5 of a growing espionage threat, major research centres being…
How did the Covid-19 pandemic begin? We need to investigate all credible hypotheses | Alison Young
This week’s revelation that a top US scientific agency has joined the Federal Bureau of Investigation in leaning toward a lab accident in China as the most likely source of the Covid-19 pandemic has once again surfaced the entrenched politics that have impeded the search for answers since day one. The new assessment is contained in a classified intelligence report, first disclosed by the Wall Street Journal and later confirmed by other media organizations. It is a small, yet important development in what has been the largely stalled search for…
How seriously should we take the US DoE’s Covid lab leak theory?
What has the US energy department said about the origin of the Covid outbreak? According to the Wall Street Journal, an updated and classified 2021 US energy department report has concluded that the coronavirus behind the recent pandemic most likely emerged from a laboratory leak but not as part of a weapons programme. Does this report mean it is more likely Covid came from a lab? Not necessarily. The report’s conclusion runs counter to that from several scientific studies as well as reports by a number of other US intelligence…
Covid-19 likely emerged from laboratory leak, US energy department says
The virus which drove the Covid-19 pandemic most likely emerged from a laboratory leak but not as part of a weapons program, according to an updated and classified 2021 US energy department study provided to the White House and senior American lawmakers, the Wall Street Journal reported on Sunday. The department’s finding – a departure from previous studies on how the virus emerged – came in an update to a document from the office of National Intelligence director Avril Haines. It follows an FBI finding, issued with “moderate confidence”, that…