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Marijuana Became Legal In Washington State, And Became Less Cool To Teens

In Washington state, once retail sales were legalized, marijuana use by 8th and 10th graders actually...

Kahweol Acetate, Cafestol In Coffee May Inhibit Prostate Cancer

A pilot study using drug-resistant cancer cells in cell cultures and in mice has found that the...

Medical Societies Have Alarming Government Influence And Are Often Biased Toward Themselves

It won't be a surprise if you believe that most surgeons promote surgery - for you. For themselves...

World's Oldest Semen As Viable As Sperm From Last Year

Semen stored in a laboratory in Sydney has been defrosted and successfully used to impregnate 34...

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Croatian scientists have been engaged in scientific work at the European Organization for Nuclear Research (CERN) for close to 40 years. Croatian scientists worked on the SPS heavy-ion programme and in 1994, research groups from Split officially joined the CMS collaboration. One year later a research group from Zagreb joined the ALICE collaboration, working with Croatian industry partners to contribute to the construction of the experiments’ detectors.
Even if you are obsessed with "natural" things, the awesome power of physics can still help you make fun colors. It's all thanks to “structural color,” the ability of an object to generate color simply by the way light interacts with its geometric structure.
At the International Solid-State Circuits Conference last week, Rice University integrated circuit (IC) designers unveiled technology they say is 10 times more reliable than current methods of producing unclonable digital fingerprints for Internet of Things (IoT) devices.
Ribbon worm? Arrow worm? Since the discovery of its fossil over a century ago, paleontologists have speculated about what branch of evolution Amiskwia sagittiformis was on.

Charles Doolittle Walcott, who first described it, compared it to the a group of ocean-dwelling worms that are fierce predators, equipped with an array of spines on their head for grasping small prey - modern arrow worms (chaetognaths), but later scientists could not find evidence of the canonical grasping spines so they believed instead it might be a a ribbon worm, or its own distinct lineage only distantly related to anything that resembles it today.
Limenitus archippus, the viceroy butterfly is a mimic, modeling its orange-and-black colors after the queen butterfly, a bug that tastes so disgusting predators have learned not to eat it or anything that looks like it, including viceroys.

The apparent dependence of mimics on their models made biologists wonder if the fates of the two species are forever intertwined. If so, then what happens when the mimic and the model part ways? Thanks to a new study, scientists know. Viceroy butterflies living in northern Florida, far away from the southern-dwelling queen butterflies, are not only more abundant than their southern kin, but they have also developed their own foul flavor.
It is believed by some that zebras have black and white stripes as a defense mechanism against flies. To others, that seems too complex. In an Occam's Razor evolutionary universe it only leads to more speculation - why would they evolve such a sophisticated defense mechanism when it doesn't help, and flies are no less attracted to zebras than they are horses? Are zebras more prone to infectious diseases carried by African biting flies?  Or is the whole premise more like evolutionary psychology than science, where there is speculation neckties evolved so men would look like superior mates?