Male Callosobruchus chinensis seed beetles have spines on their genitalia, which increase their fertilization success but injure a female’s reproductive tract—especially a female of a related species called Callosobruchus maculatus.
New research indicates that such harmful male genitalia can diminish the reproductive success of competing species and may play an important role in interspecies competition, with considerable demographic and evolutionary consequences.
“Harmful male genitalia and consequent fitness loss in heterospecific females may be one of the mechanisms by which closely related species pairs are often prevented from local coexistence,” said Dr. Daisuke Kyogok, lead author of the Journal of Evolutionary Biology study.
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.
Now, bioengineers at the Christman Lab at the University of California, San Diego have created a material that could repair and even reverse the damage done by a heart attack.
"A heart attack is a single event where the blood supply is blocked to that downstream tissue," said Karen Christman, a bioengineer at UCSD. When the tissue is deprived of the blood it needs, it becomes damaged.-->
Gary Hirshberg is a bit selective when it comes to transparency and labeling food and ingredients…at least when it applies to his own products.
In a televised interview with Bloomberg earlier this month, Hirshberg–the chairman of Stonyfield Organic and funder of the anti-GMO, pro-labeling Just Label It organization–was asked by a reporter why the company doesn’t give more information about the ingredient on its yoghurt cups: ‘natural flavor.’-->
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.
This makes it hard to argue with the fact that learning music is a good thing. But, when it comes to the type of music to teach, things get less agreeable.-->
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.
Currently, burning fossil fuels is the main source of energy here and around the world. Those fuels emitting greenhouse gasses are considered by most associated scientific organizations in the world as contributing to a potential global catastrophe in the making. With this, we are critically dependent on electricity for almost every necessity we have in our standard of living.-->
So professional clubs are constantly on the lookout for tools that can help turn these data into usable and meaningful information.
One such tool gaining popularity is machine learning. Put simply, machine learning is a form of artificial intelligence, whereby computers are able to learn without being explicitly programmed by a human operator.-->
By Sara Rennekamp, Inside Science -- Last week's deadly derailment that sent an Amtrak Northeast Regional train careening off its tracks has many people asking how such a tragedy could happen.
Hired killers don't deal with people, they are businessmen and they are doing a job, no different than a soldier in the military.-->