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Leaders of the Christian missionary group Serge, where Dr. Peter Stafford works, said he had unknowingly operated on a patient with Ebola before the outbreak was detected.

Astronomers did not know about the space rock until about a week ago.

Elon Musk's company is preparing to launch a new version of its megarocket -- a prototype of the system NASA could use to carry astronauts to the moon's surface.

Five cases have been reported this month, long after the typical season for the mushrooms behind the illnesses, leaving experts surprised. Of the 47 known cases, four people have died.

Since the Eaton Fire, Altadena residents have found hazardous substances like lead and asbestos on their properties, fueling fear, conflict, and a patchwork of emerging research.

Much of scientists' understanding of how humans get infected comes from a handful of outbreaks.

New forecasts this week from NOAA and the European Center for Medium-Range Weather Forecasts show the likelihood of a powerful El Niño rising.

The more than 12,000 images include up-close shots not previously seen from the moon mission.

Venter, one of the lead scientists in sequencing the human genome and a pioneer of modern genomics, died Wednesday.

Widespread drought in the Southeast is largely to blame for the fires, but their spread has also been fueled by leftover debris from past hurricanes that swept across the region.