NOVA scienceNOW: Dispatch: A Cosmic Enigma

Wed, 22 Aug 2007 15:00:00 EST
Dark matter is a cosmic enigma. We can't see it or touch it—so what is it? We asked MIT physicist Max Tegmark about the nature of this strange substance and why it remains so mysterious.

NOVA scienceNOW: Ask The Expert: Epigenetics

Thu, 02 Aug 2007 14:00:00 EST
Randy Jirtle answered viewer questions about epigenetics on August 2, 2007.

NOVA scienceNOW: Ask The Expert: T. Rex Blood?

Tue, 31 Jul 2007 11:00:00 EST
On July 31, 2007, Mary Schweitzer answered selected viewer questions about her discovery of what may be blood vessels and red blood cells, the implications of that and similar discoveries, and other matters dinosaurian and paleontological.

NOVA scienceNOW: Ask The Expert: Kronos

Mon, 30 Jul 2007 13:00:00 EST
On July 30, 2007, Jim Sanborn answered selected viewer questions about his sculpture Kryptos, including ones about the unsolved fourth part.

NOVA scienceNOW: Ask The Expert: Arlie Petters

Mon, 30 Jul 2007 13:00:00 EST
On July 30, 2007, Arlie Petters answered selected viewer questions about his life and work.

NOVA scienceNOW: Ask The Expert: CERN

Thu, 19 Jul 2007 15:00:00 EST
Peter Fisher answered viewer questions about particle smashing at the Large Hadron Collider (LHC) and much more on July 19, 2007.

NOVA scienceNOW: Ask The Expert: Sleep

Tue, 17 Jul 2007 09:00:00 EST
On July 16, 2007, Matt Walker answered selected viewer questions about sleep and memory.

NOVA scienceNOW: Ask The Expert: Emergence

Tue, 17 Jul 2007 09:00:00 EST
John Holland answered viewer questions about the concept of emergence on July 16, 2007.

NOVA scienceNOW: Ask The Expert: Profile: Julie Schablitsky

Tue, 17 Jul 2007 09:00:00 EST
On July 16, 2007, Julie Schablitsky answered selected viewer questions about her life and work.

NOVA scienceNOW: T. Rex Blood?

Thu, 12 Jul 2007 13:00:00 EST
Preserved soft tissue, including possible blood vessels and red blood cells, are turning up in dinosaur fossils.

NOVA scienceNOW: Epigenetics

Thu, 12 Jul 2007 13:00:00 EST
Our lifestyles and environment can change the way our genes are expressed, leading even identical twins to become distinct as they age.

NOVA scienceNOW: Kryptos

Thu, 12 Jul 2007 13:00:00 EST
A coded sculpture at CIA headquarters has yet to be fully broken.

NOVA scienceNOW: Profile: Arlie Petters

Thu, 12 Jul 2007 13:00:00 EST
A boy from a rural village in Belize grows up to become a world-class mathematician and cosmologist.

NOVA scienceNOW: Dispatch: Tiny Things of Great Import

Wed, 11 Jul 2007 15:00:00 EST
Neil Tyson explains how the study of the smallest particles offers insight into the biggest event that ever was, the birth of the universe.

NOVA scienceNOW: Dispatch: Sleep On It

Mon, 09 Jul 2007 15:00:00 EST
For a segment investigating how sleep impacts our ability to learn new skills, Neil deGrasse Tyson got to play the role of test subject. Hear what the experience was like.

NOVA scienceNOW: Dispatch: Tiny Black Holes

Fri, 06 Jul 2007 17:00:00 EST
Will tiny black holes created by CERN's Large Hadron Collider destroy the world? Physicist Dave Wark of Imperial College, London, says we can all stop worrying.

NOVA scienceNOW: Sleep

Wed, 27 Jun 2007 08:00:00 EST
Why do we need sleep? Part of the answer may be to strengthen memories.

NOVA scienceNOW: CERN

Wed, 27 Jun 2007 08:00:00 EST
Beneath the Alps, the mother of all particle accelerators nears completion.

NOVA scienceNOW: Emergence

Wed, 27 Jun 2007 08:00:00 EST
How does the "intelligence" of an ant colony or the stock market arise out of the simple actions of its members?

NOVA scienceNOW: Profile: Julie Schablitsky

Wed, 27 Jun 2007 08:00:00 EST
Meet an archeologist who is helping to rewrite the history of the Old West.

NOVA scienceNOW: Dispatch: Sleepless Surgeons

Wed, 20 Jun 2007 16:00:00 EST
Just how important is sleep to a surgeon? Harvard's Jeff Ellenbogen discusses his investigation into how sleep affects a surgeon's ability to learn and perform surgery.

NOVA scienceNOW: Dispatch: Biggest Machine Ever Built

Fri, 15 Jun 2007 17:00:00 EST
When the Large Hadron Collider goes online in 2008, it will be largest and most expensive machine ever created. But why build an $8 billion behemoth to search for the smallest particles in the universe? Neil deGrasse Tyson has given the question some thought.

NOVA scienceNOW: Dispatch: Called By the Universe

Wed, 16 May 2007 16:00:00 EST
"What do you want to be when you grow up?" When Neil deGrasse Tyson was just a boy from the Bronx, the answer was clear. Listen in and hear why.

NOVA scienceNOW: Dispatch: Reprogramming Genes

Thu, 05 Apr 2007 15:00:00 EST
Scientists used to think that cancer was entirely genetic—caused by glitches in the structure of DNA. But now it appears that tiny chemical tags that turn genes on and off might also be the culprits. If we can adjust these tags—essentially reprogramming genes—can we control certain forms of cancer? Listen in to learn more.

NOVA ScienceNOW Dispatch: Snail Slime

Thu, 01 Mar 2007 16:30:00 EST
What do get when you cross the world's most famous slowpoke with some of MIT's latest high-tech robotics?

NOVA scienceNOW: Ask The Expert: Aging

Wed, 17 Jan 2007 13:00:00 EST
Leonard Guarente answered selected viewer questions about the latest research on aging and living healthier, potentially longer lives on January 16, 2007.

NOVA scienceNOW: Ask The Expert: Space Elevator

Wed, 17 Jan 2007 13:00:00 EST
Brad Edwards answered selected viewer questions about space elevators on January 16, 2007.

NOVA scienceNOW: Ask The Expert: Maya

Wed, 17 Jan 2007 13:00:00 EST
Bill Saturno and Tom Sever answered viewer questions about remote-sensing technology and the San Bartolo site and mural on January 16, 2007.

NOVA scienceNOW: Ask The Expert: Profile: Bonnie Bassler

Wed, 17 Jan 2007 13:00:00 EST
Bonnie Bassler responded to viewer questions and comments about "talking" bacteria, her career, and more on January 16, 2007.

NOVA ScienceNOW Dispatch: An Elevator to Space?

Thu, 04 Jan 2007 16:30:00 EST
In this video extra, see a prototype of technology that may one day take us to space.

Aging

Thu, 04 Jan 2007 16:00:00 EST
Will research into "longevity genes" help us live longer and healthier lives?

Space Elevator

Thu, 04 Jan 2007 16:00:00 EST
Physicist and space-elevator visionary Brad Edwards describes the many benefits we'd enjoy.

Maya

Thu, 04 Jan 2007 16:00:00 EST
NASA archeologists use satellites to pinpoint ancient ruins buried deep in the jungle.

Profile: Bonnie Bassler

Thu, 04 Jan 2007 16:00:00 EST
Her insight into how bacteria "talk" has launched a revolution in biological and medical research.

NOVA ScienceNOW Dispatch: Bacteria Unite!

Fri, 22 Dec 2006 15:00:00 EST
It's a scary thought: bacteria "talking" together, conspiring before they make you sick. Bonnie Bassler of Princeton University explains how scientists are beginning to see these tiny organisms—once thought completely asocial—in a whole new way.

Mother of All Extinctions

Wed, 15 Nov 2006 13:00:00 EST
Why does it matter that countless species perished 250 million years ago? Neil deGrasse Tyson explains.

Mass Extinction

Wed, 15 Nov 2006 12:00:00 EST
What caused the mother of all extinctions 250 million years ago?

1918 Flu

Wed, 15 Nov 2006 12:00:00 EST
A virus that killed up to 50 million people is brought back to life to decipher its deadliness.

Profile: Cynthia Breazeal

Wed, 15 Nov 2006 12:00:00 EST
A daring engineer designs robots to communicate and interact the way people do.

Papyrus

Wed, 15 Nov 2006 12:00:00 EST
Scraps of writings from a garbage dump in ancient Egypt reveal what life was like 2,000 years ago.

Extinction Happens

Thu, 09 Nov 2006 10:00:00 EST
If you think the catastrophe that decimated the dinosaurs 65 million years ago was the biggest extinction event in Earth's history, think again. Sam Bowring of MIT explains why we should know about another, even greater biotic wipeout.

Surreal Set Tour

Wed, 25 Oct 2006 14:00:00 EST
Saturn hovering above Stonehenge? The Great Pyramids in the shadow of Mt. Fuji? NOVA scienceNOW's Vin Liota explains why he turned to green-screen technology to create a dreamlike setting for the show.

Hit or Miss

Wed, 04 Oct 2006 17:00:00 EST
Why can't scientists tell us for sure whether the stadium-sized asteroid Apophis will hit Earth? In this riff on the nature of scientific uncertainty, Neil deGrasse Tyson explains.

How's the Universe Today?

Fri, 29 Sep 2006 12:00:00 EST
Meteorite hunter Rob Matson invites Neil deGrasse Tyson to the Mojave Desert.

Hunting Meteorites

Mon, 25 Sep 2006 12:00:00 EST
Meteorite hunter Rob Matson invites Neil deGrasse Tyson to the Mojave Desert.

Engineering Fiction

Thu, 21 Sep 2006 12:00:00 EST
Will MIT roboticist Karl Iagnemma soon be hobnobbing with the Hollywood jet set? One of Iagnemma's acclaimed short stories has caught the attention of Brad Pitt. Hear more about it—and more—in this interview.

Asteroid

Tue, 19 Sep 2006 13:00:00 EDT
Will a doomsday rock the size of the Rose Bowl hit Earth in 2036?

Island of Stability

Tue, 19 Sep 2006 13:00:00 EDT
Follow the decades-long quest to create the elusive element 114.

Obesity

Tue, 19 Sep 2006 13:00:00 EDT
Examine the biology behind the compulsion to eat.

Profile: Karl Iagnemma

Tue, 19 Sep 2006 13:00:00 EDT
An innovative MIT roboticist is also an acclaimed fiction writer.

Manhattanhenge

Thu, 14 Sep 2006 12:00:00 EST
Perched over 42nd Street, NOVA scienceNOW host Neil deGrasse Tyson is eager to show you his hometown's own version of a Stonehenge magic moment. See it in this video.

Journey to the Island of Stability

Fri, 01 Sep 2006 09:00:00 EDT
Nuclear chemists are on a quest to make an extraordinary substance never before seen in the natural world. Listen in as MIT historian David Kaiser describes their long journey, which may soon reach its elusive goal.

Cosmic Office

Fri, 01 Sep 2006 09:00:00 EDT
Sputnik dolls? Planet-shaped pineapple? Neil deGrasse Tyson, the new host of NOVA scienceNOW, has a stellar collection of space-themed souvenirs. See them in this video.

A Longevity Gene

Fri, 01 Sep 2006 09:00:00 EDT
Producer Chad Cohen reports on a new study probing the secret to living long.

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