Scientists in Canada Passed Secrets to China, Investigations Find

Two scientists who worked at Canada’s top microbiology lab passed on secret scientific information to China, and one of them was a “realistic and credible threat to Canada’s economic security,” documents from the national intelligence agency and a security investigation show. The hundreds of pages of reports about the two researchers, Xiangguo Qiu and Keding Cheng, who were married and born in China, were released to the House of Commons late Wednesday after a national security review by a special parliamentary committee and a panel of three retired senior judges.…

Microsoft Debates What to Do With A.I. Lab in China

When Microsoft opened an advanced research lab in Beijing in 1998, it was a time of optimism about technology and China. The company hired hundreds of researchers for the lab, which pioneered Microsoft’s work in speech, image and facial recognition and the kind of artificial intelligence that later gave rise to online chatbots like ChatGPT. The Beijing operation eventually became one of the most important A.I. labs in the world. Bill Gates, Microsoft’s co-founder, called it an opportunity to tap China’s “deep pool of intellectual talent.” But as tensions between…

U.S. Intelligence Agencies May Never Find Covid’s Origins, Officials Say

For three years, the U.S. government has been tied in knots over the origins of the coronavirus pandemic, frustrated that China’s hindrance of investigations and unwillingness to look critically at its own research have obscured what intelligence agencies can learn about whether the virus escaped from a lab. Inquiries during the Trump and Biden administrations have yielded no definitive answers. The Energy Department and the F.B.I. favored the theory that a laboratory leak may have caused the pandemic. Five intelligence bodies considered theories of natural transmission — that the coronavirus…

Republicans Push Lab Leak Theory on Covid’s Origins, but Lack ‘Smoking Gun’

WASHINGTON — The former director of the Centers for Disease Control and Prevention accused top federal health officials on Wednesday of excluding him from discussions in early 2020 about whether the coronavirus was the result of a laboratory leak — an assertion that one of the officials, Dr. Anthony S. Fauci, later said had “nothing to do with reality.” Three years into the pandemic, the accusation by the former C.D.C. director, Dr. Robert R. Redfield, put a spotlight on the lingering bitterness and partisan divisions around the scientific question of…

Hearing on Covid’s Origins Promises Politics Mixed With Substance

WASHINGTON — House Republicans on Wednesday will dig into the origins of the coronavirus pandemic in a hearing that promises to be filled with political theater alongside substantive questions about laboratory safety and what, if anything, could have been done to prevent the worst public health crisis in a century. The hearing of the Select Subcommittee on the Coronavirus Pandemic is expected to focus largely on the intensifying debate over whether Covid-19 was the result of a laboratory leak. In advance of the session, Republicans issued a memorandum critical of…

Where Did Covid Originate? Here’s What We Know and Don’t Know

WASHINGTON — The Energy Department’s conclusion, with “low confidence,” that an accidental laboratory leak in China most likely caused the coronavirus pandemic has renewed questions about what sparked the worst public health crisis in a century — and whether the virus at the heart of it was somehow connected to scientific research. Scientists and spy agencies have tried assiduously to answer that question, but conclusive evidence is hard to come by. The nation’s intelligence agencies are split, and none of them changed their conclusions after seeing the Energy Department’s findings, officials…

China Dismisses Latest Claim That Lab Leak Likely Caused Covid

China accused the United States of politicizing the coronavirus pandemic again on Monday, in response to reports that the Energy Department had concluded that an accidental laboratory leak had likely triggered the spread of Covid worldwide. The rebuke marks the latest salvo in a running war of words between the two countries over the origins of the virus, an issue that has taken on as much of a political dimension as a scientific one as the rivalry between the two superpowers deepens. “Covid tracing is a scientific issue that should…

N.I.H. Leader Rebuts Covid Lab Leak Theory at House Hearing

The suspicions revolve around $8 million in grants to EcoHealth Alliance, a nonprofit that was collaborating on coronavirus research with scientists at the Wuhan Institute of Virology, in the city where the pandemic began. Late last month, an internal federal watchdog agency found that the N.I.H. had made significant errors in its oversight of those grants. In a 64-page report, the Office of Inspector General at the federal Department of Health and Human Services outlined missed deadlines, confusing protocols and misspent funds — raising and reinforcing concerns about the government’s…

G.O.P. Senator’s Report on Covid Origins Suggests Lab Leak, but Offers Little New Evidence

The top Republican on the Senate health committee said in a report on Thursday that the coronavirus pandemic was most likely caused by a laboratory incident in China. The report offered little new evidence, however, and was disputed by many scientists, including those whose research suggests that the outbreak originated instead at a live animal market. The report, released by Senator Richard M. Burr, Republican of North Carolina, grew out of a joint inquiry with the committee’s Democratic chairwoman that proponents of the effort hoped would add a measure of…

Your Monday Briefing: Ukraine Agrees to Talks

Good morning. We’re covering diplomacy and posturing in Ukraine, research into the pandemic’s origins and another North Korean missile test. Ukraine agrees to Russian talks President Volodymyr Zelensky of Ukraine agreed to talks with Russia “without preconditions” on the Belarusian border. Just before the announcement, President Vladimir Putin issued a new threat to the West, telling the Russian military to put its nuclear forces on alert. Western powers are uniting around Ukraine. The E.U. said it would close its airspace to Russian planes and finance the donation of weapons. Turkish…