Every season of NOVA scienceNOW ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of NOVA scienceNOW!

Topics include: Getting worked up over mirror neurons, new tools for predicting hurricanes, the sounds that sand dunes make, and a profile of MIT robot designer James McLurkin.

Mirror Neurons, Hurricanes, Sand Dunes

Featured segments include: the discovered remains of three-foot-tall humans on the island of Flores, a look at how T. Rex got to be so big, a profile of nanotechnologist Naomi Halas, the issues surrounding stem cells, and the yearly freeze and thaw cycle of the common wood frog.

3-Foot Humans, T. Rex, Stem Cells

Featured segments include: the future of hydrogen fuel cell cars, the discovery of medical potential within a petunia, a fast moving glacier and what it says about global warming, and a profile of brothers and mathematicians Gregory and David Chudnovsky.

Hydrogen Cars, Petunias, Glaciers

Featured segments include: scientists making life in the lab, lightning that may be triggered by cosmic rays, a profile of neuroscientist Erich Jarvis, the advances of fish surgery, the too human appearance of Hollywood aliens, and an update on Hurricane Katrina.

Life in the Lab, Lightning, Fish Surgery

Featured segments include: a possible tenth planet in our solar system, the twin prime conjecture, a possible reappearance of the ivory-billed woodpecker, a look at the bird flu and whether it will move to people, the growing of meat in a laboratory culture, an update on stem cells, the link between hurricanes and global warming, and a profile of cancer researcher Tyler Curiel.

Tenth Planet, Twin Primes, Bird Flu

The Apophis asteroid, the size of a football stadium, is headed  towards Earth and should arrive in 2036.Island of Stability: The long road to creating element 114.Obesity: The biology of eating.Profile: Karl Iagnemma: A look at  MIT roboticist and fiction writer Karl Iagnemma.

Asteroid

What caused the greatest mass extinction nearly 250 million years ago?1918 Flu: The 1918 flu virus is revived and decoded in the hopes that we can learn from it before the next pandemic.Profile: Cynthia Breazeal: A  look at  MIT social roboticist Cynthia Breazeal.Papyrus: Can we use space-age technology to read papyri fragments that are almost 2,000 years old?

Mass Extinction

A look at recent research on the aging process, and how we might slow it down.Space Elevator: The possible creation of a "space elevator" made from nanotubes, and a NASA contest designed to fuel innovation behind this idea.Maya: The use of a new NASA satellite technique to find lost Maya ruins.Profile: Bonnie Bassler: A look at Princeton molecular biologist Bonnie Bassler and her research on bacteria communication.

Aging

Sleep may play an important role in strengthening memories.CERN: The Large Hadron Collider (LHC) nears completion at the international particle physics lab in Geneva, Switzerland.Emergence: Scientists try to understand a phenomenon called emergence, which allows a flock of birds or a school of fish to maintain such impressive order.Profile: Julie Schablitsky: A profile of University of Oregon archaeologist Julie Schablitsky, whose  research is helping to rewrite the history of the Old West.

Sleep

A paleobiologist has discovered preserved blood vessels and red blood cells in a 68-million-year-old  dinosaur bone.Epigenetics: It seems that diet and lifestyle actually change the expression of our genes.Kryptos: A sculpture called Kryptos in the courtyard of CIA headquarters, contains a code that has yet to be fully broken.Profile: Arlie Petters: A look at Duke University Professor of Mathematics and Physics, and his  research in the field of gravitational lensing.

Dino Blood?

Dark Matter - Turns out most of the universe is held together by a mysterious, invisible substance.

Of Mice and Memory - Mice placed in enriched environments can recover lost memories, giving hope to those who study Alzheimer's.

Profile: Hany Farid - This self-proclaimed "accidental scientist" is a digital detective inventing new ways to tell if photos have been faked.

Wisdom of the Crowds - Ask enough people to estimate something, and their combined guesses will get you surprisingly close to the right answer.

Dark Matter, Mice, Crowd Wisdom

Personal DNA Testing - Genetic testing to assess risk factors for a handful of serious illnesses is now commercially available. But is it a good idea?

	

Art Authentication - See how clever computer algorithms can distinguish a master fake from a masterpiece.

	

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.

	

Profile: Pardis Sabeti - By night she's a rocker. By day, she's a Harvard geneticist tracking the evolution of the human genome.

Personal Genome; Digital Art Authentication; Carbon Sequestration; Pardis Sabeti Profile

Saving Hubble - Two teams of spacewalkers take on the risky mission of reviving the ailing Space Telescope.

First Primates - Our most distant primate ancestors, which lived about 55 million years ago, were tree-dwellers the size of mice.

Profile: Alfredo Quiñones-Hinojosa - 

He jumped the fence from Mexico to work as a farmhand and ended up a leading brain surgeon.

Killer Microbe - A relatively benign bug becomes a highly lethal pathogen, known to U.S. soldiers as Iraqibacter.

Saving Hubble, First Primates, Iraqibacter

Bird Brains - Clues to the origins of human language are turning up in the brains of birds.

Space Storms - Behind the dazzling display of the aurora borealis are space storms that could turn the lights off here on Earth.

Profile: Yoky Matsuoka - A former tennis prodigy aims to create advanced prosthetic limbs controlled by human thought.

Smart Bridges - Can we engineer bridges that tell us what's wrong with them before it's too late?

Bird Brains, Space Storms, Smart Bridges

Leeches - A century after falling out of favor, medicinal leeches are back in hospitals, sucking away on patients' wounds.

SETI - Astronomers have their radio telescopes tuned to receive signals from alien worlds. But is anybody out there?

Stem Cells Breakthrough - Three separate teams overcome a biomedical hurdle—creating stem cells without the use of human embryos.

Profile: Edith Widder - Meet a marine biologist and explorer who has engineered new ways to spy on deep-sea creatures.

Leeches; SETI; Stem Cells; Edith Widder

Phoenix Mars Lander - NASA's latest robot has already found frozen water and is looking for more signs that the Red Planet could support life.

Brain Trauma - Even so-called "mild" head injuries turn out to be anything but.

Mammoth Mystery - A pair of mammoth skeletons is found locked together by their tusks. What happened?

Profile: Judah Folkman - Once scorned for his ideas about how cancer grows, the late Judah Folkman is now hailed as a visionary.

Phoenix; Mammoth Mystery; Judah Folkman Tribute

Aging - Will research into "longevity genes" help us live longer and healthier lives?

Space Elevator - Can we build a 22,000-mile-high cable to transport cargo and people into space?

Maya - NASA archeologists use satellites to pinpoint ancient ruins buried deep in the jungle.

Profile: Bonnie Bassler - Her insight into how bacteria "talk" has launched a revolution in biological and medical research.

Aging, Space Elevator, Maya from Space

Mass Extinction - What caused the mother of all extinctions 250 million years ago?

1918 Flu - A virus that killed up to 50 million people is brought back to life to decipher its deadliness.

Profile: Cynthia Breazeal - A daring engineer designs robots to communicate and interact the way people do.

Papyrus - Scraps of writings from a garbage dump in ancient Egypt reveal what life was like 2,000 years ago.

Mass Extinction, 1918 Flu, Papyrus

Asteroid - Will a doomsday rock the size of the Rose Bowl hit Earth in 2036?

Island of Stability - Follow the decades-long quest to create the elusive element 114.

Obesity - Examine the biology behind the compulsion to eat.

Profile: Karl Iagnemma - An innovative MIT roboticist is also an acclaimed fiction writer.

Asteroid, Island of Stability, Karl Iagnemma

T-Rex Blood? - Preserved soft tissue, including possible blood vessels and red blood cells, are turning up in dinosaur fossils.

Epigenetics - Our lifestyles can change the way our genes are expressed, leading even identical twins to become distinct as they age.

Kryptos - A coded sculpture at CIA headquarters has yet to be fully broken.

Profile: Arlie Petters - A boy from a rural village in Belize grows up to become a world-class mathematician and cosmologist.

T-Rex Blood, Epigenetics, Kryptos

Diamond Factory / Anthrax Investigation / Auto-Tune / Luis Von Ahn

Join astronomers hunting for Earth-like planets, see how computers distinguish authentic art from forgeries, meet a spider biologist who studies sexual cannibalism, and learn about genes that may be involved in causing autism.

Hunt for Alien Earths / Art Authentication / Maydianne Andrade / Autism Genes

Watch how an "exercise pill" turns couch-potato mice into athletes, explore a controversial new theory of what killed the dinosaurs, meet the first Latino-American astronaut, and find out why the beautiful northern lights signal a threat to our electronic society.

Marathon Mouse/Dinosaur Plague/Franklin Chang-Díaz/Space Storms

Discover why picky eaters may have a genetic excuse, learn about a new strategy for capturing carbon dioxide from the atmosphere, see just how intelligent marine mammals can be, and meet a biomedical engineer who has figured out a way to make tiny livers in her lab.

Picky Eaters/Capturing Carbon/Sea Lions and Walruses/Sangeeta Bhatia

Follow a NASA satellite looking for water on the moon, see what ancient salt deposits reveal about life 250 million years ago, learn how bird brains are remarkably similar to our own, and meet a climatologist who digs for clues to climate change in the world's highest glaciers.

Moon Smasher/Secrets in the Salt/Bird Brains/Lonnie Thompson

Explore the controversies behind genetic testing and genome sequencing, learn about algae fuel, follow an expedition to the Arctic Ocean seafloor, and meet a woman engineer designing prosthetic limbs controlled by human thought.

Public Genomes/Algae Fuel/Arctic Ocean Seafloor/Yoky Matsuoka

Get an astronaut's view of the Hubble repair mission, find out why cowbirds are called "gangster birds," meet a Mexican immigrant farmworker-turned-brain surgeon, and learn how neuroscientists are finding ways to erase memories.

Saving Hubble Update/Gangster Birds/Alfredo Quiñones-Hinojosa/How Memory Works

Using new data from cave stalagmites and the Mississippi riverbed to understand how and why earthquakes strike in the heartland; the crucial role sleep plays in strengthening memories and facilitating learning; a profile of marine geologist Sang-Mook Lee; paleontologist Jonathan Bloch, who thinks that tiny bones embedded in limestone may be the evolutionary evidence of the creatures that evolved into primates.

Earthquakes in the Midwest/Sleep/Sang-Mook Lee/First Primates

Can humans survive a trip to Mars and back that could take two to three years? This episode of NOVA scienceNOW examines all of the perils of this journey, including deadly meteoroids, bone and muscle deterioration, and cosmic radiation. Host Neil deGrasse Tyson checks in with scientists who are developing new ways to keep astronauts alive on such a journey. Among the innovations covered are meteoroid-proof materials, new space foods and spacesuits, and novel modes of transport, such as plasma rockets. This episode also profiles young female scientist and daredevil Vandi Verma, part of the team that drives the Mars rovers on the martian surface.

Can We Make It to Mars?

This provocative episode of NOVA scienceNOW examines whether we can slow down the aging process, looks at the latest on human hibernation, and checks in with bioengineers and a computer scientist inventing ways to keep us "going forever." Neil deGrasse Tyson also takes a lighthearted look at whether the tricks that have kept a 1966 Volvo running for 2.7 million miles can also help the human body go the extra mile.

Can We Live Forever?

This episode of NOVA scienceNOW delves into some pretty heady stuff, examining magic and the brain, artificial intelligence, magnetic mind control, and the work of neuroscientist and synesthesia researcher David Eagleman. Can we really believe our own eyes? Will machines one day think like us? Can magnetic wands effectively control brain functions and treat depression? Explore this and more.

How Does the Brain Work?

Would you care to match wits with a dog, an octopus, a dolphin, or a parrot? You may think twice after watching the segments in this NOVA scienceNOW episode. While we may not be ready to send pets to Harvard, the remarkable footage and findings presented here demonstrate that many animal species are much smarter than we assume and in ways we had never imagined.

How Smart Are Animals?

In this episode of NOVA scienceNOW, journey back in time to the birth of our solar system to examine whether the key to our planet's existence might have been the explosive shockwave of an ancient supernova. Meet a chemist who has yielded a new kind of "recipe" for natural processes to assemble and create the building blocks of life. And see how the head louse, a creepy critter that's been sucking our blood for millions of years, is offering clues about our evolution. Finally, meet neuroscientist André Fenton, who is looking into erasing painful memories with an injection.

Where Did We Come From?

In this episode of NOVA scienceNOW, come face to face with social robots that understand human feelings, carry on conversations, even make jokes. Then travel to Haiti, where geologists investigate the 2010 earthquake not long after it struck for clues to how to better forecast future quakes. Afterwards, join engineers at General Motors who are testing tiny, two-wheeled cars called EN-Vs, which one day might drive themselves through city streets. Learn about proposals for making our outdated electric grid "smart." And meet Nebraska native Jay Keasling, a pioneer in synthetic biology who shares his work on developing "designer" microbes that produce biofuels and medicines.

What's the Next Big Thing?

Scientists have struggled for centuries to pinpoint the qualities that separate human beings from the millions of other animal species that have evolved on this planet. David Pogue explores the traits we once thought were uniquely ours—language, tool-making, even laughter—to uncover their evolutionary roots. He'll trace some of the crucial steps that transformed cave men to accountants, and find out if any of his own DNA came from a Neanderthal ancestor.

What Makes Us Human?

What's the secret to stopping crime? David Pogue gives the third degree to scientists pushing the limits of technology, not only to solve horrific murders but also to try to prevent crimes before they even happen. Pogue learns the latest techniques, from unraveling the clues embedded in a decomposing corpse, to detecting lies by peering directly into a suspect's brain, to tracking the creation of a criminal mind. And we meet a genius crime-stopper who has made some terrifying discoveries, including how easy it is for a bad guy to highjack not just your laptop but your kids’ toys, medical devices, even your car.

Can Science Stop Crime?

How do you get a genius brain? Is it all in your genes? Or is it hard work? Is it possible that everyone’s brain has untapped genius–just waiting for the right circumstances so it can be unleashed? From a man who can immediately name the day of the week of any date in history to a “memory athlete” who can remember strings of hundreds of random numbers, David Pogue meets people stretching the boundaries of what the human mind can do. Then, Pogue puts himself to the test: after high-resolution scanning, he finds out how the anatomy of his brain measures up against the greatest mind of the century: Albert Einstein.

How Smart Can We Get?

What are the secrets behind your favorite foods? Why are some treats, like chocolate-chip cookies, delectable, while others, like cookies made with mealworms, disgusting? You might think you understand what makes something sweet, salty, or bitter, but David Pogue gets a taste of a much more complicated truth, as he ventures into labs and kitchens where everything from apple pie to Thanksgiving turkey to juicy grasshoppers is diced, sliced, dissected, and put under the microscope. If scientists can uncover exactly what's behind the mouth-watering flavors and textures we take for granted every day, could they help us enjoy our food more—without packing on the pounds?

Can I Eat That?

Probe animal morality, the "swarm intelligence" of a beehive, the amazing navigation talents of pigeons, and more.

What Are Animals Thinking?

Meet the people building tomorrow's robots, 3-D virtual environments, mind-reading machines, and more.

What Will the Future Be Like?

NOVA scienceNOW is a News magazine version of the long-running and venerable PBS science program Nova. Premiering on January 25, 2005, the series was originally hosted by Robert Krulwich, who described it as an experiment in coverage of "breaking science, science that's right out of the lab, science that sometimes bumps up against politics, art, culture". At the beginning of season two, Neil deGrasse Tyson replaced Krulwich as the show's host. Tyson announced he would leave the show and was replaced by David Pogue beginning season 6.

The Best Seasons of NOVA scienceNOW

The Best Seasons of NOVA scienceNOW

Season 5

Season 4

Season 6

Season 1

Season 2

Season 3