quarta-feira, 29 de novembro de 2017

Simulador de solo marciano e minhocas?

https://www.sciencealert.com/earthworms-can-reproduce-in-fertilised-mars-soil-simulant

Citando:
"We need to know this because once we send humans to Mars, as NASA plans to do in the 2030s, it may be the first step towards a colony - and a colony is unsustainable without a food supply they can grow themselves.

As Wamelink and his team demonstrated in 2016, vegetables can indeed be grown in Martian soil.

Not as well as in Earth soil, but that's why the team is now trying new things - including adding pig manure and earthworms, which digest decaying plant matter and convert it into nutrients, and aerate the soil through which they tunnel.

Mars has limited weathering compared to Earth, though, which means the soil grains may have sharp edges that could harm the earthworms' digestive tracts."

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