Uncategorized
- Humans
Burdens of knowledge
Greater understanding of the role of genetics in human diseases presents scientists with ethical dilemmas.
- Health & Medicine
Salmonella seeks sweets
A sugarlike substance in the roots of lettuce may attract food-poisoning bacteria.
- Earth
Groundwater use adds CO2 to the air
Pumping out groundwater for crop irrigation or industrial purposes releases planet-warming carbon dioxide into the atmosphere.
-
19899
Soil water picks up carbon dioxide generated when soil organic matter decomposes, and this then escapes to the atmosphere. This study should give pause to those who insist that man-made materials be biodegradable.
