Eric Meyers

They were pioneering warriors, expert seafarers, and colonists of the North Atlantic realm. The Vikings even claimed in their sagas to have reached America. Now, renowned archaeologist Sarah Parcak uncovers new clues about their legendary expeditions and settlements.

Forty years ago, hundreds of skeletons were unearthed in a mass grave in an English village. Bioarchaeologist Cat Jarman believes these bones are the last remains of the 'Great Heathen Army,' a legendary Viking fighting force that once invaded England. Cat's team uncovers human stories from the front line, including evidence of women warriors and a lost king reunited with his son in death.

Weighing 54,000 gross tons and stretching over two football fields, the Seven Seas Explorer is no ordinary boat. Join pioneering shipbuilders as they endeavor to build the ultimate luxury cruise ship.

On the fiftieth anniversary of Apollo 11's historic moon landing, Nova looks ahead to the hoped-for dawn of a new age in space travel.

What's the most common, yet most elusive and least understood, particle in the universe? The neutrino. Starting with the invention of the nuclear bomb, billions of dollars have been spent in pursuit of this so-called ghost particle. Outnumbering atoms a billion to one, neutrinos are preposterously plentiful, they hardly interact with anything, and they mystifyingly morph between three different forms.

See the world through the eyes of nature's fastest animal: the peregrine falcon. Though once endangered in the US, this spectacular predator is now thriving again in American cities and on every continent but Antarctica. Join expert Lloyd Buck as he trains a captive peregrine and puts its hunting skills to the test. What's the secret behind the peregrine falcon's blistering speed?

In 1986 a catastrophic blast, 400 times more potent than the Hiroshima bomb, blew the lid off Chernobyl's Reactor No. Four, igniting fires that burned for days and sending a radioactive cloud across Europe. Ill-equipped workers heroically sealed the smoldering reactor in a concrete sarcophagus, but the hastily constructed shelter was only built to last 30 years. Now, 30 countries have come together to pay for a 25,000-ton steel shelter which will...

USGS scientist Todd Atwood and his team explore why polar bears have been turning up in record numbers in northern Alaska in addition to the 40% decline in the polar bear population in the South Beaufort Sea since 2006, discovering connections with climate change and exploration for untapped fossil fuels. Examines the yearly gathering of polar bears in Kaktovik, Alaska, and the effect of their presence on the local people.