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Jef Holbrook

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  • Destruction of the Overworld: Herobrine Reborn, Book 2 | Mark Cheverton

    Destruction of the Overworld: Herobrine Reborn, Book 2

    • UNABRIDGED (6 hrs and 32 mins)
    • By Mark Cheverton
    • Narrated By Jef Holbrook
    • Whispersync for Voice-ready
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    The Ender Dragon, infected by the Herobrine virus, has escaped into the Overworld! Gameknight999 and his father, Monkeypants271, traveled all the way to The End and banished the evil virus Herobrine to the only place they knew nothing could survive: the Void. They thought they had finally destroyed the enemy...But through the Void, Herobrine's viral lines of code were able to spread all throughout The End, infecting the horrible Ender Dragon.

  • The Power of the Infant Brain | Takao K. Hensch

    The Power of the Infant Brain

    • UNABRIDGED (15 mins)
    • By Takao K. Hensch
    • Narrated By Jef Holbrook
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    What’s on your music player? If you’re older than 30 years, it probably includes songs from your teenage years. Childhood and adolescence are the most impressionable period of a person’s life. The earliest memories and experiences are essential in shaping character - and they profoundly influence everything that comes next. “The habits we form from childhood make no small difference, but rather they make all the difference,” Aristotle proclaimed more than 2,000 years ago.

  • The Fog of Agent Orange | Charles Schmidt

    The Fog of Agent Orange

    • UNABRIDGED (21 mins)
    • By Charles Schmidt
    • Narrated By Jef Holbrook
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    Agent Orange was a defoliant sprayed by the US during the Vietnam War to clear dense vegetation and reveal enemy troops. It was contaminated with dioxin, a potent toxicant that persists for decades in the environment. Danh’s grandfather fought in the heavily sprayed Central Highlands, and his father worked at the former US air base in Da Nang, where dioxin was later discovered in the ducks and fish eaten frequently by local villagers.

  • Machines Who Learn | Yoshua Bengio

    Machines Who Learn

    • UNABRIDGED (21 mins)
    • By Yoshua Bengio
    • Narrated By Jef Holbrook
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    Computers generated a great deal of excitement in the 1950s when they began to beat humans at checkers and to prove math theorems. In the 1960s the hope grew that scientists might soon be able to replicate the human brain in hardware and software and that "artificial intelligence" would soon match human performance on any task.

  • SpaceX's Elon Musk Unveils Mars Colonization Dream Ship | Mike Wall

    SpaceX's Elon Musk Unveils Mars Colonization Dream Ship

    • UNABRIDGED (8 mins)
    • By Mike Wall
    • Narrated By Jef Holbrook
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    Now we know how Elon Musk plans to get 1 million people to Mars. At a conference in Mexico today (Sept. 27), the SpaceX founder and CEO unveiled the company's Interplanetary Transport System (ITS), which will combine the most powerful rocket ever built with a spaceship designed to carry at least 100 people to the Red Planet per flight.

  • The Coding Revolution | Annie Murphy Paul

    The Coding Revolution

    • UNABRIDGED (22 mins)
    • By Annie Murphy Paul
    • Narrated By Jef Holbrook
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    From the White House to Silicon Valley, the call for all students to learn computer programming is growing louder. Yet some critics of this vision point to logistical hurdles, and others worry about industry dictating the curriculum. Is coding for all a realistic goal - and is it one that American schools should be pursuing?

  • Gameknight999 vs. Herobrine | Mark Cheverton

    Gameknight999 vs. Herobrine

    • UNABRIDGED (5 hrs and 27 mins)
    • By Mark Cheverton
    • Narrated By Jef Holbrook
    • Whispersync for Voice-ready
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    What will Gameknight999 do when his own friend is infected with the evil Herobrine virus? With the destruction of the infected Ender Dragon, the monster kings were forced to retreat. Herobrine's poisonous XP has been captured in an obsidian box and sealed tightly. Gameknight999 and his friends know that the obsidian box will have to be destroyed to eliminate the evil virus once and for all. But how? And who will be brave enough to do it?

  • Wave of Overdoses with Little-Known Drug Raises Alarm amid Opioid Crisis | Dinah Fine Maron

    Wave of Overdoses with Little-Known Drug Raises Alarm amid Opioid Crisis

    • UNABRIDGED (5 mins)
    • By Dinah Fine Maron
    • Narrated By Jef Holbrook
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    The powerful effects of carfentanil are hard to fight with traditional medications that counteract related drugs and save lives.

  • A Cure for Africa's Soil | John P. Reganold,Jerry D. Glover

    A Cure for Africa's Soil

    • UNABRIDGED (12 mins)
    • By John P. Reganold, Jerry D. Glover
    • Narrated By Jef Holbrook
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    Mariko Majoni in Malawi has dramatically changed how he farms. Like many small-scale African farmers, he could not afford fertilizers, and over the years his maize yields plummeted. When he learned about “fertilizer trees” that capture nitrogen from the atmosphere, he planted seedlings between his rows of maize. Six years later he was harvesting 10 times as much food, enough for his family and a surplus to sell. At first his neighbors thought he had gone mad. Now many of them have adopted the same practice.

  • The Acupuncture Myth | Jeneen Interlandi

    The Acupuncture Myth

    • UNABRIDGED (11 mins)
    • By Jeneen Interlandi
    • Narrated By Jef Holbrook
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    Acupuncture is based on the concept of qi (pronounced “chi”), a life force or energy that practitioners say flows through the body along 20 distinct routes called meridians. Blocked meridians are believed to cause illness by disrupting the flow of qi. Inserting acupuncture needles at specific points along specific meridians is thought to clear those blockages and restore qi’s natural flow, which in turn restores patients to health.

  • The Threat of Inequality | Angus Deaton

    The Threat of Inequality

    • UNABRIDGED (14 mins)
    • By Angus Deaton
    • Narrated By Jef Holbrook
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    Today’s world is full of threats. Two of the great bulwarks of our recent prosperity - the postwar European project and a (reasonably) well-functioning democracy in the US - are under siege. Waves of refugees from the civil war in Syria are engulfing Europe and stretching to breaking the long-standing generosity of northern Europeans toward those in distress.

  • Saving Crafter: Herobrine Reborn, Book 1 | Mark Cheverton

    Saving Crafter: Herobrine Reborn, Book 1

    • UNABRIDGED (7 hrs and 14 mins)
    • By Mark Cheverton
    • Narrated By Jef Holbrook
    • Whispersync for Voice-ready
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    Gameknight999's best friend in Minecraft is dying, and only the User-that-is-not-a-user can save him! Herobrine, the artificially intelligent virus intent on escaping Minecraft and infecting the Internet with his evil, was captured after an epic showdown on the shores of Minecraft. Gameknight999, having trapped the virus in an unlikely prison, saved the lives of his friends in the game and was finally able to return to the physical world.

  • Collective Wisdom of Ants | Deborah M. Gordon

    Collective Wisdom of Ants

    • UNABRIDGED (15 mins)
    • By Deborah M. Gordon
    • Narrated By Jef Holbrook
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    Ant colonies work without central control. Knowinghow they do this might help us understand other systems that have no leader, from brains to the Internet.

  • Einstein of the Sea | Jonathan Balcombe

    Einstein of the Sea

    • UNABRIDGED (11 mins)
    • By Jonathan Balcombe
    • Narrated By Jef Holbrook
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    While diving off the Micronesian archipelago of Pulau, evolutionary biologist Giacomo Bernardi witnessed something unusual and was lucky enough to capture it on film. An orange-dotted tuskfish uncovered a clam buried in the sand by blowing water at it, picked up the mollusk in its mouth and carried it to a large rock 30 yards away. Then, using several rapid head flicks and well-timed releases, the fish eventually cracked open the clam against the rock.

  • Who Cares About 5G Wireless?—You Will | Elena Malykhina

    Who Cares About 5G Wireless?—You Will

    • UNABRIDGED (6 mins)
    • By Elena Malykhina
    • Narrated By Jef Holbrook
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    The Internet of things, streaming virtual reality and many other much-hyped technologies cannot exist without a complete rethinking of how mobile devices get online.

    "Who Cares About 5G Wireless?—You Will" is from scientificamerican.com, published on September 22, 2016.

  • Human Skeleton Found on Famed Antikythera Shipwreck | Jo Marchant

    Human Skeleton Found on Famed Antikythera Shipwreck

    • UNABRIDGED (9 mins)
    • By Jo Marchant
    • Narrated By Jef Holbrook
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    Hannes Schroeder snaps on two pairs of blue latex gloves, then wipes his hands with a solution of bleach. In front of him is a large Tupperware box full of plastic bags that each contain sea water and a piece of redstained bone. He lifts one out and inspects its contents as several archaeologists hover behind, waiting for his verdict. They’re hoping he can pull off a feat never attempted before - DNA analysis on someone who has been under the sea for 2,000 years.

  • A Plan To Defend Against the War on Science | Shawn Otto

    A Plan To Defend Against the War on Science

    • UNABRIDGED (19 mins)
    • By Shawn Otto
    • Narrated By Jef Holbrook
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    The challenge of creating a public able to parse evidence-free “facts” rests with the press, educators, and other thought leaders.

    "A Plan To Defend Against the War on Science" is from scientificamerican.com, published on October 9, 2016.

  • Syria's Climate Refugees | John Wendle

    Syria's Climate Refugees

    • UNABRIDGED (12 mins)
    • By John Wendle
    • Narrated By Jef Holbrook
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    Kemal Ali ran a successful well-digging business for farmers in northern Syria for 30 years. He had everything he needed for the job: a heavy driver to pound pipe into the ground, a battered but reliable truck to carry his machinery, a willing crew of young men to do the grunt work. More than that, he had a sharp sense of where to dig, as well as trusted contacts in local government on whom he could count to look the other way if he bent the rules.

  • The Brain-Boosting Power of Video Games | Daphne Bavelier,C. Shawn Green

    The Brain-Boosting Power of Video Games

    • UNABRIDGED (16 mins)
    • By Daphne Bavelier, C. Shawn Green
    • Narrated By Jef Holbrook
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    In the late 1990's our laboratory at the University of Rochester ran studies to explore the then somewhat unorthodox idea that even the adult brain could grow new brain cells or re-wire itself in response to new experiences - a biological process called neuroplasticity. As part of this research, one of us (Green), then an 18-year-old undergraduate assistant in the lab, coded a computerized psychological test assessing how well one can search for a particular shape in a busy visual scene.

  • Brain Drain | Maiken Nedergaard,Steven A. Goldman

    Brain Drain

    • UNABRIDGED (18 mins)
    • By Maiken Nedergaard, Steven A. Goldman
    • Narrated By Jef Holbrook
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    The human brain weighs only about three pounds, or roughly 2 percent of the average adult body mass. Yet its cells consume 20 to 25 percent of the body’s total energy. In the process, inordinate amounts of potentially toxic protein wastes and biological debris are generated. Each day, the adult brain eliminates a quarter of an ounce of worn-out proteins that must be replaced with newly made ones.

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