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NOVA brings you stories from the frontlines of science and engineering, answering the big questions of today and tomorrow, from how our ancestors lived, to whether parallel universes exist, to how technology will transform our lives.

Genres: History | Nature
Station: PBS (US)
Rating: 6.5/10 from 2 users
Status: Running
Start: 1974-03-03

NOVA Season 48 Air Dates


S48E01 - Secrets In Our DNA Air Date: 14 January 2021 02:00 -

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Some 30 million people have sent their DNA to be analyzed by companies like 23andMe and AncestryDNA. But what happens once the sample is in the hands of testing companies, and how accurate are their results? NOVA explores the power of genetic data to reveal family connections, ancestry, and health risks—and even solve criminal cold cases. But alongside the benefits of these rapidly growing genetic databases are serious unintended consequences.


S48E02 - Beyond the Elements: Reactions Air Date: 04 February 2021 02:00 -

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Just about every solid, liquid, or gas in the world as we know it begins with reactions between individual atoms and molecules. Host David Pogue dives into the transformative world of chemical reactions, from the complex formula that produces cement to the single reaction that's allowed farmers to feed a global population by the billions—a reaction that when reversed, unleashes the powerful chemistry of high explosives.
 


S48E03 - Beyond the Elements: Indestructible Air Date: 11 February 2021 02:00 -

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Glass so strong you can jump on it, a rubber-like coating tough enough to absorb a bomb blast and protect a clay pot dropped from 50 feet, endless varieties of plastic. Scientists and engineers have created virtually indestructible versions of common materials by manipulating the chains of interlocking atoms that give them strength—but have they made them too tough? Host David Pogue explores the fantastic chemistry behind the everyday materials we depend on and how the quest for durability can be balanced with products' environmental impact.


S48E04 - Beyond the Elements: Life Air Date: 18 February 2021 02:00 -

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Without the chemistry of photosynthesis, ozone, and a molecule called Rubisco, none of us would be here. So how did we get so lucky? To find out, host David Pogue investigates the surprising molecules that allowed life on Earth to begin, and ultimately thrive. Along the way, he finds out what we're all made of—literally.


 


S48E05 - Looking for Life on Mars Air Date: 25 February 2021 02:00 -

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Follow along as NASA launches the Mars 2020 Mission, perhaps the most ambitious hunt yet for signs of ancient life on Mars. In February 2021, the spacecraft will blaze into the Martian atmosphere at some 12,000 miles per hour and attempt to lower the Perseverance Rover into the rocky Jezero Crater, home to a dried-up river delta scientists think could have harbored life. Perseverance will comb the area for signs of life and collect samples for a possible return to Earth. Traveling onboard is a four-pound helicopter that will conduct a series of test flights—the first on another planet. During its journey, Perseverance will also test technology designed to produce oxygen from the Martian atmosphere in hopes that the gas could be used for fuel—or for humans to breathe—on future missions. 


S48E06 - Picture a Scientist / Search Engine Breakdown Air Date: 15 April 2021 01:00 -

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Picture a Scientist: Women make up less than a quarter of STEM professionals in the United States, and numbers are even lower for women of color. But there is a growing group of researchers who are writing a new chapter for women scientists, exposing longstanding discrimination, and leading the way in making science more inclusive. A biologist, a chemist, and a geologist lead viewers on a journey through their own experiences in the sciences, ranging from outright harassment to years of subtle slights. Along the way, from cramped laboratories to spectacular field stations, scientific visionaries, including social scientists, neuroscientists, and psychologists, provide new perspectives on how to make science itself more diverse, equitable, and open to all.

Search Engine Breakdown: Why does a widely used internet search engine deliver results that can be blatantly racist and sexist? Two leading information researchers, Safiya Noble, PH.D. and Latanya Sweeney, PH.D., investigate their discoveries of hidden biases in the search technology we rely on every day, involving pornographic images and ads implying criminal behavior triggered by simple search queries. Both researchers share common concerns about how everyday online searches can reinforce damaging stereotypes and explore how technology can be made more equitable. 


S48E07 - Reef Rescue Air Date: 22 April 2021 01:00 -

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Coral reefs are not just beautiful; they are also home to over a quarter of all marine life and are crucial to human societies around the globe. But as the climate changes and oceanic heatwaves become commonplace, corals are bleaching, and reefs are dying off. Now, marine biologists worldwide are teaming up to counteract this catastrophe with a technique called assisted evolution. Follow scientists as they attempt to crossbreed heat-resistant corals and even transplant corals' algae in a race to save the coral reefs from extinction. 


S48E08 - Fighting for Fertility Air Date: 13 May 2021 01:00 -

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In the United States, some 10% of people who wish to have children struggle with infertility. It's prevalent in the African American community, and fertility preservation can also be difficult for transgender individuals. But why is this? And what can be done about it? NOVA explores barriers to fertility, from the social to the biological, and the state of assisted reproductive technologies. Follow the journeys of people navigating challenges from structural inequalities and racism to falling sperm counts, egg freezing, and IVF. 


S48E09 - Hindenburg: The New Evidence Air Date: 20 May 2021 01:00 -

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The cause of the infamous Hindenburg crash has baffled experts for over 80 years, with theories about the airship's fire ranging from deliberate sabotage to a spark generated by the stormy conditions in which it landed. But new, never-before-seen amateur footage of the crash has surfaced, showing the airship's final seconds from a fresh angle and in unrivaled clarity. Taking clues from the footage and other sources, NOVA leads a fresh investigation at a leading scientific lab with eye-opening experiments that point to a final solution of the mystery.


S48E10 - Great Electric Airplane Race Air Date: 27 May 2021 01:00 -

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Can new emission-free electric planes replace our polluting airliners and revolutionize personal transportation in our cities? NOVA takes you for a ride in some impressive prototypes that are already in the air, from speedy single-seat planes that can take off like a helicopter but are half as noisy to  "self-flying" air taxis that already taking passengers on test flights in Chinese cities. But if electric airplanes are ever to advance beyond small, short-haul craft, significant hurdles of battery weight, energy storage and cooling remain to be overcome. How long will it be before the dream of super-quiet, super-efficient airliners becomes a reality?


S48E11 - Ship That Changed the World Air Date: 03 June 2021 01:00 -

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Five centuries ago, the Age of Exploration and Europe's imperial colonization of far-off lands was launched by a revolution in ship design that made long-distance ocean voyages practical. But exactly how this momentous innovation happened eludes historians. Now, the excavation of a rare intact wreck discovered off the coast of Sweden offers vital new clues to a maritime mystery. 

Along with other clues gleaned from the wreckage, the figurehead and gun carriages suggest that this could be the flagship of a Danish king named Hans. The monarch was famous for building a large naval fleet, led by a massive warship known as the Gribshunden, the Griffen Dog.


S48E12 - Bat Superpowers Air Date: 16 September 2021 01:00 -

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Bats have been implicated in deadly epidemics such as COVID-19 and Ebola, yet scientists are discovering evidence that they may hold the key to a longer and healthier life. From caves in Thailand and Texas to labs around the globe, NOVA meets the scientists decoding the superpowers of the bat.


S48E13 - The Cannabis Question Air Date: 30 September 2021 01:00 -

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NOVA investigates the story of cannabis from the criminalization that has disproportionately harmed communities of color to the latest medical understanding of the plant. What risks does cannabis pose to the developing brain? How much do we know about its potential medical benefits? As cannabis becomes socially accepted and state-legalized, scientists are exploring its long-term health consequences.


S48E14 - Particles Unknown Air Date: 07 October 2021 01:00 -

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Outnumbering atoms a billion to one, neutrinos are the universe's most common yet most elusive and baffling particle. NOVA joins an international team of neutrino hunters as they try to capture an elusive fourth form of neutrino. Their results may force scientists to redraw their blueprint of the subatomic world, the Standard Model of physics, and change our understanding of how the universe works.


S48E15 - Arctic Drift Air Date: 14 October 2021 01:00 -

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Join scientists on the most ambitious Arctic research expedition of all time. Experts from over twenty different nations join the voyage of the massive Polarstern icebreaker as it's gripped by the polar ice and drifts for nearly an entire year. From this unique research station, they can make long-term observations and perform experiments in unprecedented detail. Facing hungry polar bears, perilous sea ice cracks, and brutal cold, the team strives to understand the forces changing the region—and the world—forever.


S48E16 - Edible Insects Air Date: 21 October 2021 01:00 -

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From crunchy cricket chips to nutty black soldier fly grubs, "Edible Insects" leaps across cultural and culinary boundaries to explore the insect food industry and how it could benefit our health and our warming planet. From Thailand to Texas, cricket farmers show how the tiny critters stack up as an environmentally friendly alternative to beef protein. In fact, as one of the show's many gastro-surprises reveals, insects make animal protein vastly more efficiently than cows and, pound for pound, deliver far better nutritional value than the finest steak. Unappealing as an insect milkshake might sound, it may promote the growth of healthy gut bacteria that could help prevent inflammation and cancer. But what about the "ick" factor? NOVA invites a panel of volunteers to sample an invitingly prepared tasting menu of roasted crickets, ants, mealworms, and chipotle-flavored grasshoppers prepared by a New York chef, and not surprisingly, some of the diners have trouble concealing their squeamishness. Yet all the evidence adds up to the idea that our aversion to insects is mostly a matter of attitude and cultural conditioning. So will your kitchen table soon host its very own savory insect feast?


S48E17 - NOVA Universe Revealed: Age of Stars Air Date: 28 October 2021 01:00 -

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The sun is our life-giving source of light, heat, and energy, and new discoveries are unraveling its epic history. Join NOVA on a spectacular voyage to discover the sun's place in a grand cycle of birth, death, and renewal that makes this the age of stars. Witness how stars of every size and color came to populate our universe; how stars stage a dramatic exit when they explode as supernovae, which can outshine an entire galaxy; and how, billions of years in the future, the age of stars will lead ultimately to an age of darkness.


S48E18 - NOVA Universe Revealed: Milky Way Air Date: 04 November 2021 01:00 -

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Straddling the night sky, the Milky Way reminds us of our place in the galaxy we call home. But what shaped this giant spiral of stars, and what will be its destiny? NOVA travels back in time to unlock the turbulent story of our cosmic neighborhood, from its birth in a whirling disk of clouds and dust to colossal collisions with other galaxies. Finally, peer into the future to watch the Milky Way's ultimate fate as it collides with the Andromeda galaxy, over 4 billion years from now.


S48E19 - NOVA Universe Revealed: Alien Worlds Air Date: 11 November 2021 02:00 -

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It's an age-old question: are we alone? Or do other lifeforms and intelligences thrive on worlds far beyond our own? Ultra-sensitive telescopes and dogged detective work are transforming alien planet-hunting from science fiction into hard fact. Join NOVA on a visit to exotic worlds orbiting distant suns, from puffy planets with the density of Styrofoam to thousand-degree, broiling gas giants. Most tantalizing of all are the Super-Earths in the "Goldilocks zone," just the right distance from their sun to support life, and with one of them signaling life's essential ingredient, water, in its atmosphere. Are we on the brink of answering that haunting question?


S48E20 - NOVA Universe Revealed: Black Holes Air Date: 18 November 2021 02:00 -

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Take a seat on the ultimate thrill ride to explore nature's strangest and most powerful objects. Black holes can reshape entire galaxies, warp the fabric of space and time, and may even be the key to unlocking the ultimate nature of reality. A new generation of high-energy telescopes is bringing these invisible voids to light, showing that "supermassives" millions or billions of times larger than our sun lurk at the center of nearly every galaxy, including our own. But what happens if you stray too close to one? And what lies beyond the black hole's abyss? If nothing can ever escape it, is that the end of the story? Or could they be a portal to another dimension—or another universe, full of black holes?


S48E21 - NOVA Universe Revealed: Big Bang Air Date: 25 November 2021 02:00 -

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The Big Bang is when many think the universe started and time itself began. But what clues can we discover about this ultimate genesis of everything? And can we ever know what existed before the Universe's birthday? With stunning animation based on space telescope images, NOVA explores infant galaxies filled with violent blue stars that formed just a few hundred million years after the Big Bang. Before that—before the coming of visible light itself—stretch the "cosmic Dark Ages." But scientists haven't stopped there; instead, they've come up with an incredible theory for what happened billionths of a billionth of a second from the universe's birth. If they're right, we're on the brink of understanding more than we could ever have hoped about our cosmic origins.


S48E22 - High-Risk High-Rise Air Date: 06 January 2022 02:00 -

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Skyscrapers are gleaming symbols of prestige and an ingenious way to save space in dense urban areas. But as buildings rise ever higher, what are the risks of these architectural behemoths? Do we truly know how they will hold up in earthquakes, fires, and other potential disasters? What have--or haven't—we learned from past tragedies?


S48E50 - High-Risk High-Rise Air Date: 06 January 2022 02:00 -

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Skyscrapers are gleaming symbols of prestige and an ingenious way to save space in dense urban areas. But as buildings rise ever higher, what are the risks of these architectural behemoths? Do we truly know how they will hold up in earthquakes, fires, and other potential disasters? What have--or haven't—we learned from past tragedies?

Next Episode of NOVA is

Season 52 / Episode 3 and airs on 17 October 2024 01:00

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