NOVA Labs: Most of what we know about solar science comes from reading the Sun's light.

What factors make the sun more or less volatile?

Sharks are known to be sensitive to the electrical fields of magnets, but surprisingly, this non-magnetic rare earth metal repels them.

Where do nature's building blocks, called the elements, come from? They're the hidden ingredients of everything in our world, from the carbon in our bodies to the metals in our smartphones. To unlock their secrets, David Pogue, technology columnist and lively host of NOVA's popular "Making Stuff" series, spins viewers through the world of weird, extreme chemistry

Explore an interactive periodic table, play an elemental game, and watch the NOVA program.

Premiering March 28, 2012 at 9pm on PBS

Watch David Pogue's hilarious out-takes from NOVA's "Hunting the Elements."

In its worst crisis since World War II, Japan faces disaster on an epic scale: a death toll likely in the tens of thousands, massive destruction of homes and businesses, shortages of water and power, and the specter of nuclear meltdown. With exclusive footage, NOVA captures the human drama and offers a clear-headed investigation of what triggered the earthquake, tsunami, and nuclear crisis.

Behold your very own DNA in this do-it-yourself science experiment.

Journey back to the beginning of everything: the universe, Earth, and life itself.

This is the incredible story of Trishna and Krishna, twin girls born joined at the head. Abandoned shortly after birth at an orphanage in Bangladesh, they had little chance of survival, until they were saved and taken to Australia by an aid worker. After two years battling for life, the twins are ready for a series of delicate operations that will prepare them for the ultimate challenge.

In October 2007, a striking portrait of a young woman in Renaissance dress made world news headlines. Originally sold nine years before for around $20,000, the portrait is now thought to be an undiscovered masterwork by Leonardo da Vinci worth more than $100 million. How did cutting-edge imaging analysis help tie the portrait to Leonardo?

During World War II, Hitler's scientists developed terrifying new weapons of mass destruction. Alarmed by rumors of advanced rockets and missiles, Allied intelligence recruited a team of brilliant minds from British universities and Hollywood studios to a country house near London. NOVA tells the suspenseful, previously untold story of air photo intelligence that played a vital role.

In 1943 a squadron of Lancaster bombers staged one of the most audacious raids in military history: destroying two gigantic dams in Germany's industrial heartland and cutting the water supply to arms factories. Their secret weapon? A revolutionary bouncing bomb invented by British engineer Barnes Wallis.

Millions of people around the world live in the shadow of active volcanoes. Under constant threat of massive volcanic eruptions, their homes and their lives are daily at risk from these sleeping giants. From Japan's Mount Fuji to the "Sleeping Giant" submerged beneath Naples to the Yellowstone "supervolcano" in the United States, we will travel with scientists from around the world.

In the Rocky Mountains, archeologists uncover a unique fossil site packed with astonishingly well-preserved bones of mammoths, mastodons, and other giant extinct beasts. The discovery opens a highly focused window on the vanished world of the Ice Age in North America.

In 2010, several epic earthquakes delivered one of the worst annual death tolls ever recorded. The deadliest strike, in Haiti, killed more than 200,000 people and reduced homes, hospitals, schools, and the presidential palace to rubble. In exclusive coverage, a NOVA camera crew follows a team of U.S. geologists as they enter Haiti in the immediate aftermath of the tragedy.

Is Antarctica headed for a catastrophic meltdown? New evidence of ancient climate change may hold clues.

Watch as NOVA pieces together clues about a volcanic cataclysm and probes questions about human evolution and Earth's fragile ecosystems. 12/14/2011

"The Fabric of the Cosmos," a four-hour series based on the book by renowned physicist and author Brian Greene, takes us to the frontiers of physics to see how scientists are piecing together the most complete picture yet of space, time, and the universe. With each step, audiences will discover that just beneath the surface of our everyday experience lies a world we'd hardly recognize.