Science Channel HD

There's shock in the Bronx, as a vast sinkhole swallows a van.

In Scotland, a distinguished library is ravaged by not one but two disastrous fires; experts explore how outdated construction methods and materials contributed to the vulnerability of this esteemed place of learning.

An explosion at a chemical plant in New Jersey kills five workers and unleashes a torrent of black smoke into the morning sky; an investigation reveals how a small amount of water led to this fatal manufacturing catastrophe.

Trask and his crew take on one of the world's largest bronze statues, Pegasus and Dragon, and they need to figure out how to get on this colossus of a structure; one of the world's largest roller coasters is due for an inspection.

Trask takes on a decommissioned lighthouse 32 miles off the coast of North Carolina, and the crew must work suspended above shark-infested waters; an aging stadium with corroding catwalks needs maintenance for hockey season.

Spaceships powered by atomic bombs; artificial rings encircle an entire star; Neil Armstrong's transmission feed cuts off when he spots strange lights on the moon; how can lightning talk to itself.

Astronauts evacuate when a mystery object hurtles toward the ISS; a NASA secret agent goes undercover to retrieve missing moon rocks; scientists struggle to find answers when they discover a huge void at the edge of the solar system.

Lost tapes show that Apollo astronauts heard unexplained transmissions on the far side of the moon; an amateur astronomer finds an odd disturbance in Martian atmosphere; an unidentified object in Earth orbit starts stalking Russian spacecraft.

New astronomical research is beginning to reveal an invisible scaffold of dark matter known as the Cosmic Web, an intergalactic network that transformed the universe from a chaotic Big Bang into the structured beauty of the present day cosmos.

Cosmic rays capable of destroying human DNA are hurtling through outer space like subatomic bullets, causing space crews radiation damage.

The remains of five warships could reveal new insights into how the nuclear arms race changed the world forever; using 3-D sonar scan technology, an expert team of marine scientists investigate the catastrophic effects of atomic explosions at sea.

The enigmatic shipwrecks of El Faro and the Empress of Ireland occurred a century apart and both remain a mystery of the sea; armed with the latest technology, experts explore these doomed ships to discover what set them on the path to catastrophe.

The aerial bombardment of the Japanese fleet and the torpedo strike of the Wilhelm Gustloff are two of the most shocking attacks of WWII; expert divers explore these underwater graveyards for new evidence of these maritime conflicts.

The USS Arizona and the HMS Hood were two of the most powerful warships in history, but their weaknesses paid a fatal price; experts investigate evidence that may reveal why the age of the battleship has come to a sudden and violent end.

The wreckages of three German U-boats are eroding at the bottom of the sea along with the stories behind their disastrous fate; now, a team of maritime archaeologists race to locate the submarines and solve the mystery behind their deadly demise.

For over a century, the stories and wrecks of HMS Hampshire and HMS Vanguard continue to be shrouded in mystery; two research teams are granted special access to investigate and uncover what happened to these WWI warships in their final moments.

Countless shipwrecks lost in the depths of the oceans are time capsules containing tales of adventure and tragedy; now, marine experts hunt to locate these forgotten ships, explore their secrets and unlock their incredible stories.

A beloved hospital in the Big Easy was once the site of heroic efforts by medical staff and volunteers to evacuate patients after Hurricane Katrina; the historic Charity Hospital is being revitalized by another major New Orleans institution.

The notorious owner of this Georgia plantation once held a sale of nearly 450 enslaved people; appalled at her husband's cruelty, the man's wife wrote and published a journal about the atrocities she witnessed.

An unassuming factory marks a revolutionary leap forward -- and upward -- in how humans travel; due to ongoing legal battles and innovative designs from their many competitors, these historic upstarts would soon be grounded.

An upstart mining town fuels the American war effort in both World Wars with its bountiful deposits of lead and zinc; the dusty remains of the mining efforts that put Picher on the map would condemn the city to abandonment years later.

A railroad enterprise once built this company town for its workers to live in, but when thousands of employees went on strike, the military intervened; the history of the complex remains as relevant as ever.

At a nondescript bowling alley in South Carolina, evidence of a peaceful student protest that turned deadly comes to light; a series of tunnels in L.A. becomes a shady place for resourceful people in this sunny city.

An upstart mining town fuels the American war effort in both World Wars with its bountiful deposits of lead and zinc; the dusty remains of the mining efforts that put Picher on the map would condemn the city to abandonment years later.