Downy woodpeckers are native to deciduous forest areas of North America. For their small size they produce a wide range of birdsongs, calls and characteristic woodpecker drum beats. This recording offers continuous downy woodpecker calls and drumming recorded in their natural habitat, together with other birds and forest creatures.

From North American evergreen forests, bubbling and uplifting, the song of the winter wren is a real energy booster. Winter wrens produce longer song modulations using the power of both inhalation and exhalation breathing sequences, and they sing many variations of their melodious tunes. This recording features beautiful winter wrens in their natural habitat together with other birds of pine forests.

This binaural audio recording features the Red-winged Blackbird birdsong recorded in its natural habitat in Iowa’s Yellow River State Forest near a delicate babbling river stream together with other birds, insects, and ground creatures. Other birdsongs include: Common Yellowthroat, Song Sparrow, Yellow Warbler, American Goldfinch, Blue Jay, Brown-headed Cowbird with Red-bellied Woodpecker, Rose-breasted Grosbeak.

Whip-poor-will is a nocturnal bird carrying out all its main functions in the dark. This bird is a typical nightjar from North America that produces a distinctive repetitive tune capable of inducing a state of trance, aiding deep sleep or meditation. It is this almost psychedelic rhythm and tune that made this bird a topic of numerous legends. This recording offers continuous whip-poor-will birdsong recorded in natural habitat, together with other birds and forest creatures.

The Common Yellowthroat is a small warbler of the migratory species with an extensive range, occurring throughout North America and Central America down to northern South America. The male has distinctive yellow underparts, with a black mask above the eyes and throat, while the female has a plainer greenish-olive back and yellowish underparts. The Common Yellowthroat often perches atop a tall stalk to rap out his distinctive song, wichity-wichity-wichity. This binaural audio recording features the Common Yellowthroat birdsong recorded in its natural habitat.

Astrophysicist Neil deGrasse Tyson has attracted one of the world’s largest online followings with his fascinating, widely accessible insights into science and our universe. Now, Tyson invites us to go behind the scenes of his public fame by unveiling his candid correspondence with people across the globe who have sought him out in search of answers. In this hand-picked collection of 100 letters, Tyson draws upon cosmic perspectives to address a vast array of questions about science, faith, philosophy, life, and of course, Pluto.

Richard Dawkins' brilliant reformulation of the theory of natural selection has the rare distinction of having provoked as much excitement and interest outside the scientific community as within it. His theories have helped change the whole nature of the study of social biology, and have forced thousands to rethink their beliefs about life.

How the Earth Works takes you on an astonishing journey through time and space. In 48 lectures, you will look at what went into making our planet - from the big bang, to the formation of the solar system, to the subsequent evolution of Earth.

We are in the midst of a global mental health crisis, and mental illnesses are on the rise. But what causes mental illness? And why are mental health problems so hard to treat? Drawing on decades of research, Harvard psychiatrist Dr. Chris Palmer outlines a revolutionary new understanding that for the first time unites our existing knowledge about mental illness within a single framework: mental disorders are metabolic disorders of the brain. Brain Energy will transform the field of mental health, and the lives of countless people around the world.

Hilarious, fascinating, and a roller coaster of dizzying, historical what-ifs, Napoleon's Hemorrhoids is a potpourri for serious historians and casual history buffs. In one of Phil Mason's many revelations, you'll learn that Communist jets were two minutes away from opening fire on American planes during the Cuban missile crisis, when they had to turn back as they were running out of fuel. You'll discover that before the Battle of Waterloo, Napoleon's painful hemorrhoids prevented him from mounting his horse to survey the battlefield.

Chemistry and Our Universe: How It All Works is your in-depth introduction to this vital field, taught through 60 engaging half-hour lectures that are suitable for any background or none at all. Covering a year’s worth of introductory general chemistry at the college level, plus intriguing topics that are rarely discussed in the classroom, this amazingly comprehensive course requires nothing more advanced than high-school math. Your guide is Professor Ron B. Davis, Jr., a research chemist and award-winning teacher at Georgetown University.

How do today's most successful tech companies - Amazon, Google, Facebook, Netflix, Tesla - design, develop, and deploy the products that have earned the love of literally billions of people around the world? Perhaps surprisingly, they do it very differently from the vast majority of tech companies. In Inspired, technology product management thought leader Marty Cagan provides listeners with a master class in how to structure and staff a vibrant and successful product organization and how to discover and deliver technology products that your customers will love.

In this illuminating audiobook, Tyson and coauthor James Trefil, a renowned physicist and science popularizer, take on the big questions that humanity has been posing for millennia - How did life begin? What is our place in the universe? Are we alone? - and provide answers based on the most current data, observations, and theories.

From launchpad explosions to a pernicious cricket infestation to the demanding management style of Musk himself, the rise of SpaceX was beset with challenges and far from inevitable. Find out how the startup beat the odds and flew high enough to outpace their rivals... and where they're going next.

In The Butchering Art, the historian Lindsey Fitzharris reveals the shocking world of 19th-century surgery on the eve of profound transformation. She conjures up early operating theaters - no place for the squeamish - and surgeons, working before anesthesia, who were lauded for their speed and brute strength. They were baffled by the persistent infections that kept mortality rates stubbornly high. A young, melancholy Quaker surgeon named Joseph Lister would solve the deadly riddle and change the course of history.