Animal Science
Vultures' super strong stomach acid and immunity to deadly bacteria.
Vultures' super strong stomach acid and immunity to deadly bacteria.
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The team searches for an officer who is abducted during a failed undercover operation.
NASA's Goddard Space Flight Center; satellites; flight in a DC-3 aircraft; an observatory.
The Canadian Rockies: Lake Louise; a glacier; the woodland caribou; white-bark pine trees.
Mount Saint Helens; how mountains are formed and earthquakes caused; oceans and waterways.
An estuary in North Carolina; sea life in Curaçao; a NASA satellite monitors precipitation.
Vultures' super strong stomach acid and immunity to deadly bacteria.
The badger; the Siberian tiger.
A man with designs on his wife's inheritance tries to drive her insane.
Ian's former band-mate wants him to sell her the rights to a song.
A detective loses her memory while investigating perfume-counterfeiting.
Following a suspected unfaithful wife, Nick and Sylvie witness her murder.
Maggie goes undercover working in a bar to investigate an anti-government group.
The team searches for an abducted college coed; Jubal has a tense encounter with Rina's mother.
The team investigates a string of jewelry store robberies that culminate in a double murder.
The team makes the chilling discovery that a vengeful Vargas orchestrated the shooting.
A widow is shocked that her new "boyfriend" is the manipulative leader of a terrorist group.
A young girl is kidnapped from her daycare; Maggie struggles when her sister returns from rehab.
The team must track down a shooter targeting detectives from the same precinct and unit.
A suburban woman is kidnapped from her home; OA feels pressure to make changes in his career path.
The team hunts for a serial killer who is targeting homeless men; Tiffany and Scola are at odds.
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