Science Mysteries

Why do compass needles point north - but not quite north? What guides the migration of birds, whales, and fish across the world's oceans? How is Earth able to sustain life under an onslaught of solar wind and cosmic radiation? For centuries, the world's great scientists have grappled with these questions, all rooted in the same phenomenon: Earth's magnetism. Over 2000 years after the invention of the compass, Einstein called the source of Earth's magnetic field one of greatest unsolved mysteries of physics.

A cursed Fox. A vengeful Silver. A whole lot of trouble. Lydia Crow has long suspected there is more beneath London than just trains but has never been keen to poke around in the dark. But when Paul Fox, powerful member of the Fox Family, blackmails her into taking a case, she has no choice. Investigating a suspicious death in a disused tunnel of the London Underground for her ex-boyfriend causes friction between her and DCI Fleet - and not the fun kind.

Everyone's favorite werewolf DJ is here to mix it up just one last time. Here you will find, or even newly discover, the irrepressible Kitty Norville with friends and enemies alike: Rick the vampire; Jessi Hardin, paranormal detective; Kitty's husband, Ben; Cormac, the bounty hunter; and the villainous Dux Bellorum. These irresistible tales are full of unpredictable twists and turns: lupines experimenting with astronomy, a cheating boxer with preternatural strength, vampires arriving from the Philippines.

Ketterdam: a bustling hub of international trade where anything can be had for the right price - and no one knows that better than criminal prodigy Kaz Brekker. Kaz is offered a chance at a deadly heist that could make him rich beyond his wildest dreams. But he can't pull it off alone.

World War Z: The Complete Edition features 21 additional Hollywood A-list actors and sci-fi fan favorites performing stories not included in the original edition. New narrators include Academy Award-winning director Martin Scorsese, Spiderman star Alfred Molina, The Walking Dead creator Frank Darabont, rapper Common, Firefly star Nathan Fillion, Shaun of the Dead’s Simon Pegg, and members of the casts of Star Trek, Battlestar Galactica, Heroes and more!

My name is Danica James. I'm a cop with the Arcane Division. Most mages have the ability to manipulate the elements - fire, water, air, earth, electricity. My magic only works on machines and electrical devices. They call me a magitek. That doesn't help much with demons and vampires, let alone criminals with lethal magikal powers.

The first story ever told left a scar on the skin of the universe, with its characters doomed to an endless cycle of reincarnation and death. Trapped by his enemies, Daniel Faust - magician, mobster, and newly-minted knight of hell - has been cast in the role of the eternal Thief. Now, the story is dead-set on writing his final chapter, the one that ends with a knife in his back. The curse can’t be broken without tracking down the original Thief. The truth is buried beneath the legacy of a long-dead stage magician and a cache of occult relics from the 1940s.

Rex Dexter is cursed...with brains...and daring...and more than his fair share of devilish good looks. But also with an actual curse: dead animals keep showing up in his bedroom, wanting him to solve their murders. After successfully sleuthing a series of endangered animal assassinations, Rex is pretty sure he's home free, spiritually speaking. But that's when he finds a 2,000-pound narwhal in his beanbag chair. And this tough guy is dead. And super crabby about it.

An experiment has gone terribly wrong. Dr. Peter Hobson has created three electronic simulations of his own personality. One will test life after death; another, immortality. The third one is the control unit. But now all three have escaped from Hobson's computer into the worldwide electronic matrix. And one of them is a killer.

Mo's latest assignment is assisting the police in containing an unusual outbreak: ordinary citizens suddenly imbued with extraordinary abilities of the superpowered kind. Unfortunately these people prefer playing superpranks instead of superheroics. The mayor of London being levitated by a dumpy man in Trafalgar Square would normally be a source of shared amusement for Mo and Bob, but they're currently separated because something's come between them - something evil.

Life on Shelnora Island seemed to be perfect for me. A tropical paradise, great food, and beautiful women at the local sorority . . . until I crossed paths with a mysterious murder and sightings of an honest-to-God werewolf! Now I'm surrounded by three beautiful women, all drawn into the mystery, and it turns out that my new dog is a smoking hot shapeshifter. Life's gotten crazy, but maybe, if we all work together, we'll find out who the real killer is. Could it be the curmudgeonly divemaster with a grudge? The sleazy resort owner drumming up sensationalism for tourist bucks?

When two operatives go dark in Tampa, chasing the trail of an oligarch with ties to the demonic underworld, Vigilant Lock - the nation’s first and last line of defense against occult attack - sends their best to the rescue: Harmony Black, a troubled investigator and an elemental witch with a keen but tangled mind; and her partner Jessie Temple, the daughter of a supernatural slasher and the inheritor of her father’s powers.

Seventy thousand years ago, the human race almost went extinct. We survived, but no one knows how.

Until now. The countdown to the next stage of human evolution is about to begin, and humanity might not survive this time. The Immari are good at keeping secrets. For 2,000 years, they've hidden the truth about human evolution. They've also searched for an ancient enemy - a threat that could wipe out the human race. Now the search is over.

A call from a distraught wife, and another from Lt. Murphy of the Chicago PD Special Investigation Unit makes Harry believe things are looking up, but they are about to get worse, much worse. Someone is harnessing immense supernatural forces to commit a series of grisly murders. Someone has violated the first law of magic: Thou Shalt Not Kill. Tracking that someone takes Harry into the dangerous underbelly of Chicago, from mobsters to vampires....

The luxurious Lathrop Grand Hotel is a Savannah institution that has entertained guests for more than a century and a half, offering some of the finest accommodations in the city. Famously haunted, the hotel draws tourists from around the world eager to encounter its numerous ghosts. The hotel is also known for being honeycombed with hidden doors and secret passages, enabling staff to appear and disappear quickly as they attend to the hotel's guests.

Tabloid reporter Hope Adams appears to live the life of an ordinary working girl. But, in addition to possessing the beauty of a Bollywood princess, Hope has other unique traits. For she is a half-demon - a human fathered by a demon. And she has inherited not only a gift for seeing the past but a hunger for chaos - along with a talent for finding it wherever she can.

Ruby Mae Jewell's talents to pick the best bargains for her family's business are hotter than the hinges on the gates of Hades! But when one of her friends gets stabbed at his own wedding reception, her abilities to solve the mystery go completely cold. There are a lot more questions than answers, and with more than the groom's life in the balance, Rue might need a lot of help to stitch things back together. Will Ruby Mae's five-alarm fire powers help her find the culprit who hurt her friends or will they disappear in a puff of smoke?

Lexi Sobado and her mentor Spyder McGraw work as a covert team to thwart the four-headed monster they've code-named the Hydra. No one - not Lexi's teammates, not her fiance, Striker Rheas, not even Command itself - knows about their mission. They fear a mole lurks among them, but the truth may be even more sinister. In trying to protect the government, the US military might have created the weapon that ultimately destroys America.

When Steve's friends, Max, Lucy, and Henry, get their hands on a map with the location of the legendary Mine Mountain, Steve questions if the map is a fake. Going to this fabled mountain, rumored to contain an endless supply of diamonds, is every treasure hunter's dream. Many believe the mountain doesn't exist, and although Steve is doubtful about the map's authenticity, the gang convinces Steve and Kyra to embark on a journey to find this magical mountain.

Political division in the US has reached the boiling point, and the second American Civil War is underfoot. A far-left socialist candidate has stolen the reins of power, and his designs against the republic are absolute. Ava's group pledges to launch an insurgency campaign against the occupying force in Texas, but will have to watch out for those who have been tasked with purging the patriots. Ava's team cannot fail in its mission to liberate Texas. If Texas falls, America's demise is all but certain.