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May 27, 2014 10:00 PM ET // Jennifer Viegas
A fossilized tooth dredged from the bottom of the English Channel near Dorset, England, belonged to a formidable Jurassic marine predator and is the largest known tooth of its kind found in the U.K.
May 23, 2014 06:00 AM ET // Eric Niiler
U.S. Predators are operating from the border, though ground intelligence may hold the key.
Jan 27, 2011 01:05 PM ET // Tim Wall
Connecting protected areas and allowing tigers the corridors they need to roam could help rescue currently bottle-necked populations.
Aug 9, 2012 08:00 AM ET // Benjamin Radford
Ranchers in Colorado are baffled by a series of animal mutilations. Is there a scientific explanation to this mystery?