Learn how rack cooling and environmental measures helps administrators to overcome potential issues with technology advancements, including datacenter heat caused by high-density computers.

We monitor the stock market, the weather, our blood pressure. Yet environmental monitoring is often criticized as being unscientific, expensive, and wasteful. Scientists argue that environmental monitoring is a crucial part of science in the review, "Who needs environmental monitoring"" Gary Lovett (Institute of Ecosystem Studies) and colleagues from several universities and US government offices contributed to the review.

With gold nanoparticles, DNA and some smart chemistry as their tools, scientists at Northwestern University have developed a simple "litmus test" for mercury that eventually could be used for on-the-spot environmental monitoring of bodies of water, such as rivers, streams, lakes and oceans, to evaluate their safety as food and drinking water sources.