Extras
On the plains of South Africa, an army of dung beetles recycle the dung of large mammals.
Ummat Somjee goes to Thailand to observe the cultural tradition of fighting beetles.
An intimate portrayal of three families confronting the unique challenges of Alzheimer鈥檚.
Gavin Svenson heads to the Brazilian rainforest to sample the diversity of mantises.
Nancy鈥檚 wedding plans take a surprising turn. Sister Catherine takes her First Vows.
Forensic science is put to the test after the first-ever staged multi-vehicle pileup.
Jesse Barber and Akito Kawahara study the evolutionary arms race between bats and moths.
Monarch butterflies winter in the fir forests of Michoacan, Mexico, after an epic migration.
An elusive photographer uses street art tactics to share his previously unknown work with the world.
Joyce faces a disciplinary hearing over a recent complaint which has been upheld.
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Overview Season 1
Meet the axolotl, Mexico City鈥檚 endangered, smiling salamander.
North Carolina鈥檚 Outer Banks may be one of the most dangerous coastlines in the world.
Florida's once endangered crocodiles are making a very unlikely comeback!
Scientists find the exact time of a massive quake using trees, soil and human records.
Can new scientific research help unravel the mystery of Cahokia's disappearance?
What happened to the once lush, now desert-like Colorado River Delta?
How is this groundbreaking experiment in Ecuador helping deforested rainforests recover?
Sea otters play a vital role in maintaining the balance of sensitive kelp forests.
Joe visits the world鈥檚 largest crane, an engineering feat helping to fight climate change.
These secret islands of the Everglades might be the key to saving it.