In 2014, U.S. officials imposed a moratorium on experiments to enhance some of the worlds most lethal viruses by making them transmissible by air, responding to widespread concerns that a lab accident could spark a global pandemic. Apparently, the government has decided the research should now move ahead. In the past year, the U.S. government quietly greenlighted funding for two groups of researchers ... to conduct transmission-enhancing experiments on the bird flu virus. Neither the approval nor the deliberations or judgments that supported it were announced publicly. This lack of transparency is unacceptable. Making decisions to approve potentially dangerous research in secret betrays the governments responsibility to inform and involve the public when approving endeavors ... that could put health and lives at risk. Hundreds of researchers ... publicly opposed these experiments when they were first announced. In response to these concerns, the government issued a framework in 2017 for special review of enhanced pathogens that could become capable of causing a pandemic. The framework ... requires that experts in public-health preparedness and response, biosafety, ethics and law, among others, evaluate the work, but it is unclear from the public record if that happened. This secrecy means we dont know how these requirements were applied, if at all, to the experiments now funded by the government.