Time travel is deterministic and locally free, a paper says—resolving an age-old paradox. This follows research observing that the present is not changed by a time-traveling qubit. It’s still not very ...

What if skyscraper-high waves rose in empty oceans and nobody saw them until satellites did? That is exactly what happened, ...

The UN warned Thursday that severe flooding across hundreds of displacement sites in the Gaza Strip was placing nearly half of the territory's population at heightened risk as heavy rains worsen ...