Saving 'sang': New label aims to conserve wild ginseng

Denny Colwell fires up a weed whacker and makes quick work of his prized American ginseng patch, a fall ritual that helps hide the slow-growing, long-lived perennials from poachers keen on digging them up.

Notre Dame paper examines how students understand mathematics

It's both the bane of many parents and what has been called a major national vulnerability: the inability of many children to understand mathematics. Understanding that problem and developing strategies to overcome it is ...

Dryers: Homes' energy guzzlers just got greener

For the first time in six years, Energy Star certification, a standard seal of approval for energy efficiency, has been expanded to include another major household appliance. 

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