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    But because orchids sometimes rely on only one pollinator species, they are also vulnerable.
    0:34

    But because orchids sometimes rely on only one pollinator species, they are also vulnerable.

     1  view
    The precise mix of compounds in this layer is species specific.
    0:33

    The precise mix of compounds in this layer is species specific.

     1  view
    The way some orchids mate can be very convincing.
    0:36

    The way some orchids mate can be very convincing.

     5  views
    Insects can't resist. Other insects have tactile "love handles".
    0:36

    Insects can't resist. Other insects have tactile "love handles".

     1  view
    Other orchids look and smell like fungi from which certain insects lay their eggs.
    0:36

    Other orchids look and smell like fungi from which certain insects lay their eggs.

     1  view
    Random genetic mutations in orchids may produce a trait.
    0:33

    Random genetic mutations in orchids may produce a trait.

     3  views
    Most orchids need to attract insects to collect pollen and move it from plant to plant.
    0:39

    Most orchids need to attract insects to collect pollen and move it from plant to plant.

     47  views
    Could life survive on planets less hospitable than ours?
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    Could life survive on planets less hospitable than ours?

     4  views
    They are distributed in different biomes.
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    They are distributed in different biomes.

     3  views
    In addition to dryness, tardigrades can tolerate other extreme stresses.
    0:40

    In addition to dryness, tardigrades can tolerate other extreme stresses.

     3  views
    They start making special molecules that populate the tardigrade's cells.
    0:37

    They start making special molecules that populate the tardigrade's cells.

     2  views
    But creatures like tardigrades, also known as water bears.
    0:37

    But creatures like tardigrades, also known as water bears.

    Without water, humans can only survive for about 100 hours.
    0:42

    Without water, humans can only survive for about 100 hours.

    So this technique should only be used when necessary.
    0:34

    So this technique should only be used when necessary.

     4  views
    So TI can work to the animal's advantage, unless someone else knows its secret.
    0:38

    So TI can work to the animal's advantage, unless someone else knows its secret.

    Other animals use titanium for purposes other than defense.
    0:41

    Other animals use titanium for purposes other than defense.

    Anything that blocks dopamine receptors can prolong catatonia.
    0:33

    Anything that blocks dopamine receptors can prolong catatonia.

     9  views
    Speaking of cats, mother cats pinch their kittens by the scruff of the neck.
    0:40

    Speaking of cats, mother cats pinch their kittens by the scruff of the neck.

    But most scientists call this tonic quiescence (TI).
    0:35

    But most scientists call this tonic quiescence (TI).

     3  views
    Imagine that you are being attacked by a fierce predator.
    0:38

    Imagine that you are being attacked by a fierce predator.

     6  views