Aeroponics, a technique in which plants are suspended and the roots misted with a nutrient solution, is another method for growing plants without soil.

空气培植法是一种将植物悬挂起来、并将根部浸泡在营养液中的技术，是另一种不需要土壤就能种植植物的方法。

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Plants can not do [grow] without soil, water and sunlight.

植物短不了土壤、水和阳光。

《新英汉大辞典》

It may be said that without soil there can be no agriculture.

可以说，没有土壤就不可能有农业。

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They say the roots develop better. But Jeffrey Dinslage, president of Nature Hills Nursery in Omaha,Nebraska, points out that bare-root roses come without soil.

VOA: special.2010.06.15

She says farmers should not endlessly work the same soil without putting back some organic matter.

VOA: special.2010.11.09

America has gone more than 7 years without another terrorist attack on our soil."

VOA: special.2009.01.17

That means building futuristic structures that use wastewater and solar power to produce hydroponic (grown in a nutrient-rich water, without soil) and aeroponic (grown in water-saturated air) crops.

FORBES: Skyscraper Farms: A Name To Know In 2011

So, why would the Pakistani government endure the embarrassment and charges of incompetency that have come with appearing not to know the U.S. was conducting a raid on their soil without permission?

FORBES: Pakistan Military Knew About Bin Laden Raid Well In Advance Of Attack

The concept: When crops are planted without tilling, the soil holds more carbon, which means less goes up into the atmosphere.

NPR: Can Dirt Really Save Us From Global Warming?