If another country tested nuclear weapons, here’s how we’d know
President Trump has argued the U.S. should test nuclear weapons because other countries are doing it. But scientific data suggest they’re not.
President Trump has argued the U.S. should test nuclear weapons because other countries are doing it. But scientific data suggest they’re not.
We summarize the week's scientific breakthroughs every Thursday.
Theoretical physicist Alex Lupsasca is pushing for a space telescope to glimpse the thin ring of light that is thought to surround every black hole.