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Longer hours on social media may increase teens' risk of cyberbullying

Cyberbullying may be linked to higher use of social network sites by school children aged 14-17 years, rather than to simply having a social network profile, according to a new study that examined data from several European countries.
Source: https://www.sciencedaily.com/releases/2018/07/180709202913.htm

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Oxygen levels on early Earth rose, fell several times before great oxidation even

Earth's oxygen levels rose and fell more than once hundreds of millions of years before the planetwide success of the Great Oxidation Event about 2.4 billion years ago, new research shows.
Source: https://www.sciencedaily.com/releases/2018/07/180709161540.htm

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'Star in a jar': World record for stellarators set

When Germany's Wendelstein 7-X fusion facility set a world record for stellarators recently, a finely tuned instrument proved the achievement. The record strongly suggests that the design of the stellarator can be developed to capture on Earth the fusion that drives the sun and stars.
Source: https://www.sciencedaily.com/releases/2018/07/180709161538.htm

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How antifreeze proteins stop ice cold

The existence of antifreeze proteins (AFPs) has been known for decades, but the mechanisms governing this unique survival technique have proven difficult to determine. A new study shows how AFPs function while also providing a direction for future research.
Source: https://www.sciencedaily.com/releases/2018/07/180709152709.htm

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Biosensor chip detects single nucleotide polymorphism wirelessly, with higher sensitivity

Scientists have developed a chip that can detect a type of genetic mutation known as a single nucleotide polymorphism (SNP) and send the results in real time to an electronic device. The chip is at least 1,000 times more sensitive at detecting an SNP than current technology. The advance could lead to cheaper, faster and portable biosensors for early detection of genetic markers for diseases such as cancer.
Source: https://www.sciencedaily.com/releases/2018/07/180709142153.htm

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New patch boosts brightness in medical diagnostic tests

A multidisciplinary team has developed a high-tech fix that brings some medical diagnostic tests out of the dark and into the light.
Source: https://www.sciencedaily.com/releases/2018/07/180709132709.htm

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Manipulating single atoms with an electron beam

The same electrons that form images of atomic structures can also be used to move atoms in materials. This technique of single-atom manipulation is now able to achieve nearly perfect control over the movement of individual silicon impurity atoms within the lattice of graphene, the two-dimensional sheet of carbon.
Source: https://www.sciencedaily.com/releases/2018/07/180709120209.htm

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New chemical compounds make catalysts more efficient

A team has developed new chemical compounds that make catalysts more efficient. With their electronic and spatial properties, the new class of what are known as phosphine ligands ensures that catalysts are more active and more stable. They have now described how the new ligands act on gold catalysts. The group assumes that the results can be transferred to other catalysts and that the already patent-pending systems are worth considering for broader industrial application.
Source: https://www.sciencedaily.com/releases/2018/07/180709120206.htm

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Generating electrical power from waste heat

Researchers have developed a tiny silicon-based device that can harness what was previously called waste heat and turn it into DC power.
Source: https://www.sciencedaily.com/releases/2018/07/180709120135.htm

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Physicists uncover why nanomaterial loses superconductivity

Physicists have discovered that superconducting nanowires made of MoGe alloy undergo quantum phase transitions from a superconducting to a normal metal state when placed in an increasing magnetic field at low temperatures. The study is the first to uncover the microscopic process by which the material loses its superconductivity.
Source: https://www.sciencedaily.com/releases/2018/07/180709111148.htm

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Source: https://www.sciencedaily.com/news/top/technology/