Prickly pear (Opuntia echios) plants on the island of Santa Cruz in the Galápagos can grow as tall as 12 feet to 20 feet, where they can't be reached by giant tortoises.
By The Scientist Staff | June 24, 2014
FLICKR, DALLAS KRENTZEL
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By Jef Akst
Federal officials suspend research on certain pathogens at Tulane University in New Orleans following the escape of potentially dangerous bacteria from a high-security lab.
By Bob Grant
Researchers find Oriental rat fleas, the insects that can carry plague bacteria, on New York City-dwelling rodents.
By Jenny Rood
Scientists add a mouse gene to the cow genome to ward off bovine tuberculosis.
View the March 2015 contents.
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