Some scientists are confident that organs from genetically modified pigs will one day be routinely transplanted into humans. But substantial ethical questions remain.
The president’s halt of foreign aid upended two U.S. programs that help the International Atomic Energy Agency find clues about Iran’s drive to build atomic bombs.
Organizations funded by the United States helped keep dangerous pathogens in check around the world. Now many safeguards are gone, and Americans may pay the price.
The Athena lander from Intuitive Machines could not charge its batteries after ending up on its side. It largely failed to accomplish science and technology tasks for NASA and other customers.