Season 4

    Video thumbnail: It’s Okay to Be Smart Your Climate Conscience - feat. Al Gore

    It’s Okay to Be Smart

    Your Climate Conscience - feat. Al Gore

    News about climate change is often full of doom, guilt, and anxiety.

    Your Climate Conscience - feat. Al Gore

    Video thumbnail: It’s Okay to Be Smart Why Nature Loves Hexagons (featuring Infinite Series!)

    It’s Okay to Be Smart

    Why Nature Loves Hexagons (featuring Infinite Series!)

    From spirals to spots to fractals, nature is full of interesting patterns.

    Why Nature Loves Hexagons (featuring Infinite Series!)

    Video thumbnail: It’s Okay to Be Smart How Do Glaciars Move?

    It’s Okay to Be Smart

    How Do Glaciars Move?

    Glacier ice flows like a liquid, and it does that without melting!

    How Do Glaciars Move?

    Video thumbnail: It’s Okay to Be Smart Beavers: The Smartest Things in Fur Pants

    It’s Okay to Be Smart

    Beavers: The Smartest Things in Fur Pants

    we show you why Earth’s second largest rodent is more amazing than you ever knew

    Beavers: The Smartest Things in Fur Pants

    Video thumbnail: It’s Okay to Be Smart Orchid Mantis: Looks That Kill

    It’s Okay to Be Smart

    Orchid Mantis: Looks That Kill

    These killer insects are almost indistinguishable from orchids!

    Orchid Mantis: Looks That Kill

    Video thumbnail: It’s Okay to Be Smart Nature's Living Fireworks

    It’s Okay to Be Smart

    Nature's Living Fireworks

    This week we investigate the beautiful phenomenon of bioluminescence.

    Nature's Living Fireworks

    Video thumbnail: It’s Okay to Be Smart How The Pyramids Were Built (Pyramid Science Part 2)

    It’s Okay to Be Smart

    How The Pyramids Were Built (Pyramid Science Part 2)

    This week we look at ancient Egyptian mathematics, building techniques, tools, and culture

    How The Pyramids Were Built (Pyramid Science Part 2)

    Video thumbnail: It’s Okay to Be Smart Is Space A Thing?

    It’s Okay to Be Smart

    Is Space A Thing?

    Since the days of Ancient Greece, philosophers and scientists have been asking Whats space

    Is Space A Thing?

    Video thumbnail: It’s Okay to Be Smart How Ingenious Animals Have Engineered Air Conditioning

    It’s Okay to Be Smart

    How Ingenious Animals Have Engineered Air Conditioning

    This week we look at how a few of these species have mastered physics to install air condi

    How Ingenious Animals Have Engineered Air Conditioning

    Video thumbnail: It’s Okay to Be Smart De-Extinction: A Mammoth Undertaking

    It’s Okay to Be Smart

    De-Extinction: A Mammoth Undertaking

    his week we look at the technical and ethical hurdles behind the science of de-extinction

    De-Extinction: A Mammoth Undertaking

    Video thumbnail: It’s Okay to Be Smart CRISPR and the Future of Human Evolution

    It’s Okay to Be Smart

    CRISPR and the Future of Human Evolution

    In part 4 of our special series on human ancestry and evolution, we look into the future.

    CRISPR and the Future of Human Evolution

    Video thumbnail: It’s Okay to Be Smart Are We All Related?

    It’s Okay to Be Smart

    Are We All Related?

    In part3 of our special series on human ancestry we investigate how closely related we are

    Are We All Related?

    Video thumbnail: It’s Okay to Be Smart Much A-Do About Hair

    It’s Okay to Be Smart

    Much A-Do About Hair

    Learn all about the science of human hair in this week’s video!

    Much A-Do About Hair

    Video thumbnail: It’s Okay to Be Smart Why Are We The Only Humans Left?

    It’s Okay to Be Smart

    Why Are We The Only Humans Left?

    New research has shown that Neanderthals were not the brutish, unintelligent cavemen that

    Why Are We The Only Humans Left?

    Video thumbnail: It’s Okay to Be Smart Where Did Humans Come From?

    It’s Okay to Be Smart

    Where Did Humans Come From?

    we tour through our family tree to meet our ancestors and distant cousins

    Where Did Humans Come From?

    Video thumbnail: It’s Okay to Be Smart Dogs and Humans: A 30,000-Year Friendship (ft. MinuteEarth)

    It’s Okay to Be Smart

    Dogs and Humans: A 30,000-Year Friendship (ft. MinuteEarth)

    New research is finally unlocking the paw-in-hand evolution of dogs and humans.

    Dogs and Humans: A 30,000-Year Friendship (ft. MinuteEarth)

    Video thumbnail: It’s Okay to Be Smart Why I ❤ PBS

    It’s Okay to Be Smart

    Why I ❤ PBS

    Why I Love PBS.

    Why I ❤ PBS

    Video thumbnail: It’s Okay to Be Smart How Much Plastic is in the Ocean?

    It’s Okay to Be Smart

    How Much Plastic is in the Ocean?

    Ocean plastic pollution is a massive environmental problem.

    How Much Plastic is in the Ocean?

    Video thumbnail: It’s Okay to Be Smart Illuminating the Universe: The History of Light

    It’s Okay to Be Smart

    Illuminating the Universe: The History of Light

    Here is the history of light, according to physics.

    Illuminating the Universe: The History of Light

    Video thumbnail: It’s Okay to Be Smart What is Luck?

    It’s Okay to Be Smart

    What is Luck?

    There’s a scientific side to luck, and if you study a few principles of math and psycholog

    What is Luck?

    Video thumbnail: It’s Okay to Be Smart Solving the Puzzle of Plate Tectonics

    It’s Okay to Be Smart

    Solving the Puzzle of Plate Tectonics

    But did thee feel the Earth move?

    Solving the Puzzle of Plate Tectonics

    Video thumbnail: It’s Okay to Be Smart How the Meter Became The Meter

    It’s Okay to Be Smart

    How the Meter Became The Meter

    The meter is the world’s ultimate measure, but how did it become “the” meter? What is this

    How the Meter Became The Meter

    Video thumbnail: It’s Okay to Be Smart How the Toilet Changed History

    It’s Okay to Be Smart

    How the Toilet Changed History

    How the invention of the toilet changed history.

    How the Toilet Changed History

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