
SEP 8, 2010 |
Motor Oil A listener asks what the numbers on a bottle of motor oil mean. |

SEP 1, 2010 |
Tail-Wagging Birds A listener asks: Why do some birds bob their tails up and down? |

AUG 24, 2010 |
Sunscreen Timing A listener asks: how long should you wait after applying sunscreen before going outside? |

JUN 1, 2010 |
Squinting Squinting helps the eyes focus fuzzy images. |

MAY 19, 2010 |
Ouija Boards The psychology behind Ouija boards. |

MAY 11, 2010 |
Plant Budding A change in temperature and day length signal plants to form buds in the spring. |

APR 7, 2010 |
Sizing Up Dogs II A listener asks whether it’s true that large dogs don’t live as long as small dogs. |

APR 6, 2010 |
Sizing Up Dogs I A listener asks whether large dogs are more intelligent than small dogs. |

MAR 29, 2010 |
Scanning Memories Researchers can distinguish between different memories using a brain scan. |

FEB 3, 2010 |
Toilet Seats A listener asks: Can you get any diseases from a toilet seat? |

JAN 21, 2010 |
Gelatin Source Reality Check investigates the urban legend that gelatin is made from cow hooves. |

DEC 29, 2009 |
Changing Hail A listener asks if hail changes size as it falls to the ground. |

NOV 10, 2009 |
Planetary Alignment Myth A NASA scientist de-bunks the myth that an alignment of the planets affects gravity on earth. |

OCT 13, 2009 |
Bee Stings A listener asks: Do honeybees really die after they sting you? |

SEP 30, 2009 |
Eyelid Twitching A listener asks: What causes eyelid twitching? |

SEP 21, 2009 |
Melatonin and Jet Lag A listener asks: Can melatonin really help decrease jet lag? |

SEP 16, 2009 |
Reading in Dim Light In this episode our new series Reality Check: Does reading in dim light ruin your eyes? |

SEP 7, 2009 |
Vitamin C & Colds Does vitamin C really prevent the common cold? |

JUL 30, 2009 |
Moon Elements A listener asks: What is the moon made of? |

JUL 21, 2009 |
Staring into Space A listener asks: What are your eyes and brain doing when you stare into space? |

MAY 27, 2009 |
Compact Fluorescent Lightbulbs The amount of mercury in a CFL bulb does not pose much of an environmental hazard. |

MAY 21, 2009 |
Picky Mosquitoes Not all mosquitoes are out for human blood. |

MAY 13, 2009 |
Hungry Mosquitoes Mosquitoes find their prey by following plumes of carbon dioxide.
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APR 27, 2009 |
Bone Loss Age-related bone loss is hard to stop once it starts. |

MAR 24, 2009 |
Upside-Down Airplanes The shape of the wing is what allows a plane to fly upside down. |