Crushed clean, dry eggshells, when scattered over the soil, are intended to stop adult gnats from laying eggs and potentially add natural fertilizer. However, they merely sit on the surface, collecting dust, while the gnats remain attracted to the damp compost.
"The awesome thing with pulse crops is no nitrogen needs... not having to put any nitrogen on a pulse crop is a great starting point," he says, noting that this allows growers to not only meet PKS requirements but, in some cases, build soil fertility for the rotation.
In the silent vacuum of space, five autonomous robots churn through the lunar surface, digging up a loose layer of rock and dust and leaving rows of uniform tracks in their wake. Stopping only to recharge at a central solar power station, the car-sized machines process the lunar dirt internally to extract a type of helium so rare on Earth that a palm-sized container is estimated to be worth millions.
A global research team has analyzed the prospects for biomineralization on Mars, a process in which bacteria, fungi, and microalgae can create minerals as part of their metabolism, offering a byproduct that could be useful to prospective Martian explorers by providing the raw materials needed to produce aggregates such as concrete. With an extremely thin and mostly carbon dioxide atmosphere, air pressure less than 1 percent of Earth's,