Last month, a team of international scientists completed a month-long visit to Wuhan to investigate SARS-CoV-2’s origins. Convened by the WHO, and closely monitored by Chinese authorities, the team concluded initially that a lab leak was so unlikely that further investigations of it were unnecessary. The WHO’s director general later walked that statement back, claiming that “all hypotheses remain open and require further analysis and studies.” A group of 26 scientists, social scientists, and science communicators — Petrovksy among them — have now signed their own letter arguing that WHO investigators lacked “the mandate, the independence, or the necessary accesses” to determine whether or not SARS-CoV-2 could have been the result of a laboratory incident.

The WHO investigation follows a year during which debates over SARS-CoV-2’s origins turned increasingly acrimonious. Chinese officials were, and still are, unwilling to provide information that might settle lingering questions about where the virus came from, and in the absence of critical data, expert views coalesced around two competing scenarios: One that a lab leak was plausible and needed more scrutiny, and another that SARS-CoV-2 had almost certainly spilled over from nature and that the odds of a lab leak were so remote that the possibility could essentially be taken off the table. Those insisting on a natural origin say the virus lacks genetic features that would show it to have been deliberately engineered. But it’s also possible that SARS-CoV-2 evolved naturally in the wild before it was brought into a lab to be studied, only to subsequently escape. The Wuhan Institute of Virology, which many see as the likeliest site of a breakout, houses one of the largest collections of coronaviruses in the world.

David Relman, a microbiologist at Stanford University, says a lab leak was never the subject of a “fair and dispassionate discussion of the facts as we know them.” Instead, tempers soon began to flare as those calling for a closer look at possible lab origins were dismissed as conspiracy theorists spouting misinformation. Election-year politics and growing Sinophobic sentiments only added to the tensions. Attacks on Asian Americans had been escalating since the pandemic began, and with then-President Trump fuming about a “Chinese virus,” many scientists and reporters became “cautious about saying anything that might justify the rhetoric of his administration,” says Jamie Metzl, a senior fellow at the Washington, D.C.-based Atlantic Council, an international affairs think tank.

It could have been career suicide for scientists to voice suspicions about a possible lab leak, says Metzl, especially when there was already a long history of viral disease outbreaks spilling over from nature. Alina Chan, a post-doctoral fellow specializing in gene therapy and cell engineering at the Broad Institute in Cambridge, Massachusetts, echoes that view. Chan says the risk of challenging the orthodoxy that SARS-CoV-2 has natural origins — an entirely plausible hypothesis, she maintains — is greatest for established scientists in infectious disease with supervisory roles and staffs to support. She herself has spent much of the last year calling for more scrutiny of a potential lab leak, claiming that as a post-doc, she has less to lose.

The vitriol also obscures a broader imperative, Relman says, which is that uncovering the virus’ origins is crucial to stopping the next pandemic. Threats from both lab accidents and natural spillovers are growing simultaneously, as humans move steadily into wild places, and new biosafety labs grow in number around the world. “This is why the origins question is so important,” Relman says.

Some of the citizen sleuths behind the open-source effort to identify the hundreds of Donald Trump-loving rioters who stormed the U.S. Capitol have launched an impressive new website that organizes the stunning amount of digital evidence collected about the Jan. 6 insurrection.

The website, Jan6evidence.com, was built by a small team of volunteer software developers, using the work of open-source investigators looking into the deadly Capitol attack. The site features a color-coded timeline that reflects the time of day, and allows users to click around on a map of the Capitol and pull up any video evidence from a particular location and time frame. Users can even track an individual suspect’s movements over the course of Jan. 6.

HuffPost was given an early look at the website by a software engineer who is helping to lead the project. The engineer said the site “is nothing without the enormous work of the open source investigators making their results available to all, and especially those helping to prepare results into a standardized format for display.” They credited the “extraordinarily careful work” of Twitter users like @K2theSky, @CoryCullington and @MasaSpalatin with making the effort possible.

“Open source investigators, professional journalists, and law enforcement are all undertaking the painstaking, labor-intensive work of scrutinizing video and photos related to the attack,” the software engineer said. “Our aim is to make it much [more] efficient to review that media, so that they can most effectively investigate what happened on January 6 and why."