Researchers have found dozens of human bones on the banks of the iconic river, many of them thousands of years old.
But the study, whose publication was delayed by a pause in public communications by the agency, leaves key questions unanswered.
The Trump administration appears to be flouting a judge’s order pausing the dismantling of U.S.A.I.D.
Oarfish are rarely documented by scientists, but one was seen this month by a group visiting a beach in Mexico.