Tag: plants

  • Harvesting Metal from Plants

    From the NY Times, one of the more interesting science reports I’ve read lately: there exist a number of species of plants that thrive in metal-rich environments, soaking up the heavy elements that can then be harvested and used for industrial purposes (traditional farming has a lot of downsides, but perhaps not as many as mining operations?).

    Slicing open one of these trees or running the leaves of its bush cousin through a peanut press produces a sap that oozes a neon blue-green. This “juice” is actually one-quarter nickel, far more concentrated than the ore feeding the world’s nickel smelters.

    This quote is evocative of the “speculative fiction” sound this makes:

    The language of literature on phytomining, or agromining, hints of a future when plant and machine live together: bio-ore, metal farm, metal crops. “Smelting plants” sounds about as incongruous as carving oxygen.

  • Floral Acoustics

    I’ve heard that plants attract insects and other pollinators using nectar guides (nature’s own user interface!), but I’ve never heard of this adaptation: the plants depicted above manipulate sound rather than light to attract attention, a bit of floral acoustics.

    Ralph Simon at the University of Ulm in Germany and his colleagues analysed the leaf’s acoustic properties and found that its unique shape produces a strong, constant echo across a range of sound-source angles. They then trained bats to seek a feeder hidden in artificial foliage. The animals found feeders topped with the cup shape in an average of 12 seconds — around half the time it took them to locate unadorned feeders or those under other leaf shapes.

    (Via Nature)