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Since ancient times, fishermen have spun tales of giant sea monsters, tentacled beasts that capsized ships and drowned countless sailors. Most of these mythical creatures are now known to have been based on real animals, such as giant squid and octopuses...

Near-death experiences (NDEs) are medically inexplicable mysteries that can affect anyone. Happening when a person is unconscious, comatose, or clinically dead, NDEs puzzle doctors and scientists with their intensely realistic features. Although no two...

Near-death experiences (NDEs) are medically inexplicable mysteries that can affect anyone. Happening when a person is unconscious, comatose, or clinically dead, NDEs puzzle doctors and scientists with their intensely realistic features. Although no two...

It dwells in a dark lake in the Scottish Highlands--so says the legend of the Loch Ness Monster. For thousands of years, people have told stories of "Nessie," the giant water creature with a long neck and flippers. But is it real or a hoax? Scientists...

It dwells in a dark lake in the Scottish Highlands--so says the legend of the Loch Ness Monster. For thousands of years, people have told stories of "Nessie," the giant water creature with a long neck and flippers. But is it real or a hoax? Scientists...

Best known from the fuzzy 1967 Patterson film, Bigfoot (Sasquatch) is a large apelike creature that allegedly roams the Pacific Northwest. Variations are said to exist around the world, including the yeti and yowie. But is this creature real or a hoax?...

Best known from the fuzzy 1967 Patterson film, Bigfoot (Sasquatch) is a large apelike creature that allegedly roams the Pacific Northwest. Variations are said to exist around the world, including the yeti and yowie. But is this creature real or a hoax?...

Swimming along ocean coasts, ragged-toothed sand tiger sharks move slow but their large size makes it hard for prey to escape. This North American Spanish translation lets early readers dive in and explore these sharks' unique body features, food,...

Swimming through warm ocean waters, fearsome tiger sharks are always on the hunt, ready to sink their teeth into any prey that crosses their path. This North American Spanish translation lets early readers dive in and explore tiger sharks' unique body...

Swimming through the world's oceans, fierce bull sharks are always on the hunt, ready to chomp on any prey they come across. This North American Spanish translation lets early readers dive in and explore bull sharks' unique body features, food, habitats,...

Swimming through the world's oceans, vigilant hammerhead sharks are always on the hunt, using their unique headshape to watch for prey all around them. This North American Spanish translation lets early readers dive in and explore hammerheads' unique...

Swimming through the ocean's depths, fearsome-looking goblin sharks are always on the hunt, ready to snag prey on needle-sharp teeth. This North American Spanish translation lets early readers dive in and explore goblin sharks' unique body features,...