An international group of plant pathologists has solved a historical mystery behind Ireland's Great Famine.
Sure, scientists have known for a while that a funguslike organism called Phytophthora infestans was responsible for the potato blight that plagued Ireland starting in the 1840s. But there are many different strains of the pathogen that cause the disease, and scientists have finally discovered the one that triggered the Great Famine.
In Orlando, Fla., early Wednesday "an FBI agent was involved in a deadly shooting connected to the Boston Marathon bombing case," NBC News is reporting. A man who was being questioned by the agent is dead. NPR's Dina Temple-Raston and Carrie Johnson have also confirmed the news.
Just how firm the man's alleged connection to the marathon case is, though, remains unclear.
This is MORNING EDITION, from NPR News. I'm Linda Wertheimer.
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And I'm David Greene. We now know the tornado that struck the city of Moore, Okla., on Monday was an EF5, with winds over 200 miles an hour. That designation is the strongest possible rating for a tornado. Federal, state and local teams are on the ground this morning, cleaning up debris and tending to survivors. But there is little - if any - chance of finding any more survivors; that, according to the fire chief in Moore.
The next mayor of Los Angeles will be City Councilman Eric Garcetti.
In a race in which the two top contenders were both Democrats, the 42-year-old Garcetti has opened a 7- to 8-percentage-point lead over City Controller Wendy Greuel as Tuesday's votes are being counted.