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Liquid metal electronics like antennas are intriguing because the shape and length of the conducting paths that form an antenna determine its critical properties such as operating frequency and radiation pattern. Using a liquid metal, such as eutectic gallium and indium, allows for modification of antenna properties more dramatically than is possible with a fixed conductor. 

But a significant and unfortunate drawback slowing the advance of such devices is that they tend to require external pumps that can't be easily integrated into electronic systems, so North Carolina State University researchers set out to create a reconfigurable liquid metal antenna controlled by voltage only.


Objections to automated driving seem a little silly, since millions of lives are lost in car accidents and human error is estimated to cause more than 90% of them.

It may just be fear of the unknown, the same precautionary principle that makes people worry about having a Twitter login or be concerned about vaccines or GMOs.

Regardless of the reasons for concern, it is a giant error to assume that data and reason will win out, as science has learned painfully about energy, medicine, food and pollution. Trust may instead be established in less direct ways and a recent paper argues that a virtual driver programmed to resemble the human driver could increase the level of trust and acceptance in smart cars.

Organic products would seem tailor-made for shoppers seeking foods and beverages that are healthier for them, their families and the planet, but a new analysis reveals that most Americans perceive the organic label as nothing more than an excuse to sell products at a premium. 

71 percent of consumers don't even think that organic products have a labeling standard. 51 percent believe that labeling something as organic is just an excuse to charge more. 72 percent do believe that the products are probably healthier.

If you have been purchasing Blue Buffalo pet food based on its rather suspicious claims about being "byproduct free", well, that is the power of marketing, no different than organic- and gluten-free manufacturers have created a similar health halo for their customers.

But competitor Purina didn't like marketing claims that its pet food was inferior. On May 6, 2014, Purina filed a lawsuit against Blue Buffalo for false advertising after testing revealed the presence of poultry by-product meal in Blue Buffalo's top selling pet foods. 

While secondhand exposure to cigarette smoking is linked with numerous health maladies, cannabis smoke is currently under a halo of no harm. Yet second-hand marijuana can cause an effect that cigarettes cannot - problems with memory and coordination, and in some cases testing positive for the drug in a urinalysis. At least in a very small study.

Cannabis is the most widely used illicit drug in the world. The authors say the new research is the most comprehensive study of secondhand cannabis smoke and its effects since the 1980s, when researchers found the drug's active ingredient, tetrahydrocannabinol, or THC, and other cannabis byproducts could turn up in nonsmokers' bodies after an hour or more spent in extreme conditions with heavy smokers in an enclosed space. 


A new simulation modeled the effects of land use changes on the species diversity in rivers and streams and estimates that the loss of biodiversity will caused by changes in land use practices far more than by climate change.

Despite that, climate change gets all of the attention and changing land use practices, such as clear-cutting of forests for agricultural use, are frequently neglected in the development of conservation concepts.