Admiring the Power and Innovation of a 747 Engine
While the science behind the high bypass ratio engine in a 747 plane may seem complicated, the results are striking. It's capable of delivering over 70% more power than a standard engine.

While the science behind the high bypass ratio engine in a 747 plane may seem complicated, the results are striking. It's capable of delivering over 70% more power than a standard engine.
Many scientists believe that black holes make sense in the realm of theoretical physics, but couldn't really exist in real life. Capturing an image of a black hole would change all that.
With 800 miles of stunning hills and dipping valleys, it's clear that the often-cited beauty of the Yorkshire Dales is no exaggeration. It's earned its grandiose nickname: God's Own Country.
In ancient Rome, chariot race fandom was serious business - sometimes to ridiculous lengths. For example, it was very common for people to pay money to local magicians to cast curses on rival teams.
Chatsworth House, the historic home of the Cavendish family, is a vast estate that once spanned 35,000 acres. At one point, Chatsworth employed a staff of 40 people to maintain it - including two full-time window cleaners.
After years of planning by over 200 international scientists, the data purported to show the first ever image of a black hole is ready. The team gathers for the big reveal - it's a seismic moment in astrophysics.
One of the most distinguishing features of the British capital, London, is its many statuesque looking skyscrapers. Even more absorbing are the unique nicknames given to them.
Macaques are the most studied monkeys in the world, thanks to the efforts of scientists like Wolfgang Dittus. He arrived in Sri Lanka 50 years ago and has devoted his life to better understand theirs.
An archive of the secret communications between Benedict Arnold and British army officers indirectly reference Arnold's wife, Peggy. It is the strongest clue yet that she may have been a pivotal figure in Arnold's treachery.
With a fancy fan of tail feathers, bright yellow eye combs and magnificent plumage, male sage grouses bring enough dazzle to their courtship displays to put a peacock to shame.
When Continental Airlines Flight 1713 crashed on November 15, 1987, it soon became clear to investigators that initial theories could not be backed up by evidence. They would have to wait for the flight data recorders to be analyzed.
A pair of hungry wolves come up with a smart plan to swindle the swamp bears away from their carrion. While one wolf distracts the bears, the other goes in and steals her fill.
On October 7, 2008, passengers and crew on Qantas Airlines Flight 72 were pulled up from their seats. Immediately after, the plane went into a dangerous and uncontrolled nosedive.
A dominant brown bear - dubbed the 'Swamp King' - comes across a younger bear feasting on a kill. He immediately moves in - as the biggest and strongest around, he won't take a backseat to any rival.
In 1981, President Mitterrand of France took Ronald Reagan to one side and revealed an extraordinary intelligence operation. It was a revelation that would turn the Cold War on its head.
In 1941, Naval Intelligence zero in on a Japanese spy named Itaru Tachibana. Raiding his room at the Olympic Hotel in Los Angeles reveals a stash of documents that outlined the extent of his undercover network.
Despite its name, the Spanish Flu almost certainly didn't originate in Spain. In fact, it appears to have originated on the Midwestern prairies of Kansas.
In 2013, a wildlife cameraman from Norway, Asgeir Helgestad, met a polar bear mom whom he names Frost. Over the next few years, their paths would cross again.
In 1692, an Indian slave in Massachusetts admitted to being an agent of Satan, and to casting spells on her master's family. This admission would kick off the horrific events known as the Salem witch trials.
Naked mole rats are able to live on low oxygen and can even survive without it - conditions that would kill most mammals. The big question is how have they evolved to do that?
Without access to the crash sites of MH17, which went down on July 17, 2014, investigators can't definitively say why the crash happened. So they begin to consider all kinds of theories - including a meteor strike.
Bahama feral pigs were once domestic pigs let loose by local farms. Through cunning and resourcefulness, they've continued to thrive in the wild - and fuel Bahaman tourism along the way.
A fishing trawler may seem like an easy target for a powerful U.S. submarine - but these were the early days of the Pacific War, and even Japanese civilian boats were armed to the teeth.
Since 1990, the National Wildlife Strike Database has reported more than 200,000 bird strikes on commercial planes. This data tells us when planes are most vulnerable to these types of collisions.
Why did TransAsia Flight 222 veer off course and crash a mile short of Magong Airport? An examination of the wreckage doesn't provide the answer - but it does convince investigators to rule one theory out.
When Boudica's forces destroyed the Temple of Claudius, the devastation was ruinous. Ironically, the fire actually helped preserve many of the contents - often to a level that astonishes modern archaeologists.
On September 9, 1980, the MV Derbyshire went down in the Pacific Ocean - the largest British ship ever lost at sea. A team of investigators send down a remote vehicle camera to find out what happened.
Marilyn Monroe's breathless rendition of 'Happy Birthday, Mr. President' in 1962, has passed into legend. But it was her silk dress that would go on to become a priceless piece of Marilyn memorabilia.
Controversy surrounds the exact origins of yoga, but Dr. Jim Mallinson has been studying the practice for years and he has some interesting insight on the true origins.
When a baby is born surgically via C-section, it may miss out on the health benefits of passing through the birth canal.