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Ancient Creature of the Deep
Meet the coelacanth, a bizarre fish and "living fossil" that has changed little in its 400 million years on Earth.
High-tech health care comes to veterinary medicine—radiology to surgery, intensive care to sports medicine.
Experts zero in on what separates humans from our closest living relatives.
Beast of Loch Ness, The
Scientists employ state-of-the-art sonar and cameras in an attempt to locate the elusive Loch Ness Monster.
NOVA scienceNOW: Bird Brains
Clues to the origins of human language are turning up in the brains of birds.
Deep in an Australian cave, paleontologists discover fossils of extinct giant animals.
NOVA scienceNOW: Capturing Carbon
An eighth-grader's science fair project prompts her scientist father to develop a new way to pull excess carbon dioxide out of the atmosphere.
Scientists examine the life of the crocodile, a creature that has changed little since the time of the dinosaurs.
Curse of T. rex
How do paleontologists and commercial fossil hunters know where to look for rare and priceless dinosaur bones?
Deep Sea Invasion
A toxic aquarium plant is accidentally released into the Mediterranean, overwhelming marine life and threatening to spread worldwide.
Dogs and More Dogs
How and why did man's best friend evolve from wolves, and why are dogs so remarkably diverse today?
NOVA scienceNOW: Emergence
How does the "intelligence" of an ant colony or the stock market arise out of the simple actions of its members?
In remote mountains of China, experts find clues to the origins of Earth's most stunning plants.
NOVA scienceNOW: First Primates
Our most distant primate ancestors, which took the stage shortly after the dinosaurs left it, were tree-dwellers the size of mice.
The male bowerbird of Australia exhibits extraordinary courting antics.
NOVA scienceNOW: Frozen Frogs
The common wood frog freezes solid every winter and then, come spring, defrosts and mates.
Four-Winged Dinosaur, The
Surprising fossils from northeastern China spur a debate over how birds evolved.
Garden of Eden
The giant tortoise and an ant-sized frog are just two of the dazzling array of life-forms native to the Seychelles Islands.
Ghost in Your Genes
Experts investigate how a mysterious "second genome" helps determine our biological fates.
Hawaii Born of Fire
From their blistering beginnings as molten rock, the Hawiian islands have grown into a verdant paradise of unique lifeforms.
The Incredible Journey of the Butterflies
Follow the 2,000-mile migration of monarchs to a sanctuary in the highlands of Mexico.
Into the Abyss
A daring expedition attempts to retrieve several "black smoker chimneys" from the seafloor a mile and a half down.
Island of the Sharks
Visit Costa Rica's Cocos Island, which boasts more sharks per cubic yard of water than perhaps any other place on the planet.
Island of the Spirits
On the island of Hokkaido in the far north of Japan lives an extraordinary spectrum of life.
Japan's Secret Garden
For at least 2,000 years, the wildlife and people living around Japan's Lake Biwa have lived in a harmonious balance.
Jewel of the Earth
David Attenborough probes the mysteries of ancient life-forms perfectly preserved in amber.
Judgment Day: Intelligent Design on Trial
Science is 'Exhibit A' in a landmark trial on the teaching of evolution.
Kingdom of the Seahorse
The world's leading sea horse biologist journeys to Australia and the Philippines to explore the secret lives of these extraordinary fish.
Kings of Camouflage
Meet the cuttlefish, one of the brainiest, most bizarre animals in the ocean.
Last Great Ape, The
An expedition into the Congo examines one of our closest living relatives, the peace-loving bonobo.
NOVA scienceNOW: Leeches
A century after falling out of favor among doctors, medicinal leeches are back in hospitals, sucking away on patients' wounds.
Leopards of the Night
NOVA's state-of-the-art camera equipment reveals the nocturnal hunting behavior of leopards in Zambia's Luangua Valley.
Meet the monitors, the largest, fiercest and craftiest lizards on Earth.
Lord of the Ants
Naturalist E.O. Wilson's fascination with little creatures has led him to some very big ideas.
Master of the Killer Ants
The Mofu people of Cameroon rely on an unlikely ally—a driver ant—to protect their homes and crops.
Megabeasts' Sudden Death
Scientists propose a radical new idea of what killed off mammoths and other large animals at the end of the Ice Age.
NOVA examines the fascinating life cycle of the world's oldest living thing, a 4,600-year-old bristlecone pine in California's White Mountains.
NOVA scienceNOW: Mirror Neurons
A recently discovered system in the brain may help explain why we humans can get so worked up watching other people.
Missing Link, The
Paleontologists studying the Devonian Period (408-360 million years ago) discover a tiny fossil of colossal importance.
Mysterious Life of Caves
Toxic caverns teeming with strange life-forms spark a radical theory of how caves take shape.
Night Creatures of the Kalahari
Beneath the grassland plains of the Kalahari lies a hidden world of rare and exotic animals.
Odyssey of Life
Lennart Nilsson's extraordinary microphotography reveals a world we've never seen—within and on ourselves.
NOVA investigates an all-consuming passion for orchids, nature's most highly evolved plant.
Perfect Pearl, The
Once a rare gem produced by an accident of nature, the pearl is now the product of careful human engineering.
NOVA scienceNOW: Profile: Maydianne Andrade
By peering into the sex lives of Australian redback spiders, this evolutionary biologist has shown the upside of cannibalism.
NOVA scienceNOW: Profile: Bonnie Bassler
Her insight into how bacteria "talk" has launched a revolution in biological and medical research.
NOVA scienceNOW: Profile: Sangeeta Bhatia
Intrigued by the idea of artificial organs, a biomedical engineer uses computer-chip technology to craft tiny livers.
NOVA scienceNOW: The Search for ET
Astronomers have their radio telescopes tuned to receive signals from alien worlds. But is anybody out there?
NOVA scienceNOW: Profile: Edith Widder
Meet a marine biologist and explorer who has engineered new ways to spy on deep-sea creatures.
Secret of Photo 51
Meet Rosalind Franklin, the unsung heroine behind the discovery of DNA's double helix.
Secrets of the Crocodile Caves
Rare lemurs and crocodiles with bizarre cave-dwelling behavior draw scientists to a remote corner of Madagascar.
Sharks are known as the "perfect predators," but sometimes they slip up and attack the wrong prey—people.
NOVA scienceNOW: Smart Sea Lions and Talking Walruses
Marine mammals are wowing researchers with more than just circus tricks
NOVA scienceNOW: Stem Cells
What are they, and how do we find a balance between hope for cures and respect for life?
NOVA scienceNOW: Stem Cells Breakthrough
Three separate teams overcome a biomedical hurdle—creating stem cells without the use of human embryos.
Ocean Animal Emergency
Wildlife veterinarians struggle to save injured seals and sea lions on the California coast.
Tales from the Hive
Our cinematographer films inside a hive and follows bees in flight to capture honeybee behavior.
NOVA scienceNOW: T. Rex
Does an adolescent growth spurt account for T. rex's enormous size?
NOVA scienceNOW: T. Rex Blood?
Preserved soft tissue, including possible blood vessels and red blood cells, are turning up in dinosaur fossils.
Volcano Above the Clouds
Join a scientific expedition to the glacier-capped summit of Kilimanjaro, Africa's tallest mountain.
NOVA exposes the secret life of the pack: where its members live, how they hunt, what their calls mean.
Wilds of Madagascar, The
Scientists try to capture and study a catlike predator known as the fossa and an extremely rare lemur called the silky sifaka.
World in the Balance
NOVA investigates forces that are radically changing populations in both rich and poor nations, and explores how to create a world that can sustain the human race.