subscribe 
$1-million gift for new Korea Foundation Professorship
Published: 18 Dec 2012
Mining ancient ores for clues to early life
An analysis of sulfide ore deposits from one of the world鈥檚 richest base-metal mines confirms that oxygen levels were extremely low on Earth 2.7 billion years ago, but also shows that microbes were actively feeding on sulfate in the ocean and influencing seawater chemistry during that geological time period.
Email address:
Published: 10 Dec 2012
A better way to make chemicals?
Bulk solvents, widely used in the chemical industry, pose a serious threat to human health and the environment. As a result, there is growing interest in avoiding their use by relying on 鈥渕echanochemistry鈥� 鈥� an energy-efficient alternative that uses high-frequency milling to drive reactions. Because milling involves the intense impact of steel balls in rapidly moving jars, however, the underlying chemistry is difficult to observe.
Email address:
Published: 3 Dec 2012
