Archives for September 2014
More efficient solar panels
The most important metric for solar panels is the cost of generating a given amount of power. As this number drops, the case for using solar power becomes increasingly compelling.
Environmental drones
A mention of drones most likely brings to mind military operations or, more recently, their potential future as delivery carriers for companies like Amazon.
New desalination technologies
In an era of rising water demands and more frequent extreme droughts, there is growing interest in desalination technologies. Removing the salt from seawater or various impurities from wastewater are among the few ways of obtaining fresh water that are independent of rainfall.
The length of a bee’s tongue
Most of us have probably never given much thought to the length of a bee’s tongue – or, for that matter, the fact that bees even have tongues. Yet new research suggests tongue length may be a key factor in bees’ ability to survive their ever-changing environment.
Agrihoods
Residential amenities are typically thought of in terms of golf courses and fitness centers. But at new type of neighborhood popping up all over the U.S., the main attraction is a farm. Called ‘agrihoods,’ these communities center around farm-to-table living.
Recovering waste heat
Thermoelectric materials convert temperature differences into electric voltages and vice versa. The Peltier Effect, which allows voltages to provide either heating or cooling, is used in portable coolers and in some car seats. But the Seebeck Effect, which produces electricity from temperature differences, has far more potential for practical use.
Trouble from tropical fish
One of the highlights of visiting tropical destinations such as the Caribbean and the South Pacific is the profusion of colorful tropical fish that inhabit the warm waters of these places. Climate change is raising water temperatures far from the tropics and tropical fish are migrating to entirely new locations. While this may sound like a good thing, is definitely isn’t.
Light rail systems really help
More and more American cities have been adding or expanding light rail systems in recent years. Notable examples over the past decade include Los Angeles, San Francisco, Portland, Dallas and Denver.
Hellbender populations
North America’s largest salamander is disappearing at an alarming rate. Hellbenders commonly reach two feet in length and have a life span of up to 30 years. They are the third-largest salamander in the world, after the Chinese giant salamander and the Japanese giant salamander.
Throwing away fish
The worldwide fishing industry is in danger. If current trends continue, it could collapse by 2050 because three-quarters of the world’s fish stocks are being harvested faster than they can reproduce. Some 80% of fish species already are fully exploited or are in decline and the great majority of all large predatory fish already are gone.
Turning food waste into biogas
Turning food waste into fuel is not a new idea, but it is one that is finally starting to catch on in a big way. A growing number of wastewater treatment plants across the country are participating in the effort to recycle food waste and produce biogas.
Polluted beaches
Few things are more beloved in the summer than a trip to the beach. It’s a time to relax and take in the calming beauty of the sand and surf. If you enjoy swimming, however, you might want to consult the National Resource Defense Council’s new ‘Testing the Waters’ report.
Urban heat is not a myth