Concerned that efforts to staunch the flow of excess greenhouse gases bleeding into our atmosphere won't be enough to save us from a worsening crisis, MIT engineers have returned to a decades old vision to help ease the effects of climate change.
wide glass sandwich blown from materials mined from lunar rock. Placed in a precise balance between the Sun's and Earth's gravity and the impact of solar rays and particles, it would reflect an amount of light calculated to mitigate the steady rise in temperature.have been considered, from hydrogen-filled aluminum balloons to an artificial ring of particles that would turn Earth into a miniature Saturn.
Made from a homogenous substance like molten silicon, the subtle variations in thickness in the bubble film could reflect a variety of wavelengths of solar radiation, increasing its efficiency. And unlike the complex origami required to fold and un-fold large reflective fabrics for delivery, a sheet of bubbles could be blown in place, optimizing costs.
Ideally, engineers would hope for the entire system to be capable of reducing the amount of sunlight that would otherwise bake our planet by 1.8 percent – a figure arrived at by previous studies.
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