Plants & Animals

Time-shifted inhibition helps electric fish ignore their own signals

Electric fish generate electric pulses to communicate with other fish and sense their surroundings. Some species broadcast shorter electric pulses, while others send out long ones. But all that zip-zapping in the water can ...

Biochemistry

Chemists expand genetic code of E. coli to produce 21st amino acid, giving it new abilities

Rice University chemist Han Xiao and his team have successfully expanded the genetic code of Escherichia coli bacteria to produce a synthetic building block, a "noncanonical amino acid." The result is a living indicator for ...

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Tech Xplore

ALMA sees most distant Milky Way look-alike

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA), in which the European Southern Observatory (ESO) is a partner, have revealed an extremely distant and therefore very young galaxy that looks surprisingly ...

The oldest known cremation in the near east dates to 7000 BC

Ancient people in the Near East had begun the practice of intentionally cremating their dead by the beginning of the 7th millennium BC, according to a study published August 12, 2020 in the open-access journal PLOS ONE by ...

A novel strategy for quickly identifying twitter trolls

Two algorithms that account for distinctive use of repeated words and word pairs require as few as 50 tweets to accurately distinguish deceptive "troll" messages from those posted by public figures. Sergei Monakhov of Friedrich ...

NASA finds hurricane Elida's eye covered

NASA's Aqua satellite obtained visible imagery of Hurricane Elida in the Eastern Pacific as it continued to weaken. Imagery revealed that Elida's eye had become covered as the storm embarks on a weakening trend over cooler ...

Demographics data helps predict NY flood insurance claims

In flood-prone areas of the Hudson River valley in New York state, census areas with more white and affluent home owners tend to file a higher percentage of flood insurance claims than lower-income, minority residents, raising ...

Engaging undergrads remotely with an escape room game

To prevent the spread of COVID-19, many universities canceled classes or held them online this spring—a change likely to continue for many this fall. As a result, hands-on chemistry labs are no longer accessible to undergraduate ...

Why black rhinos may get sick in captivity

Inflammation and oxidative stress may be involved in the pathogenesis of iron overload disorder in captive black rhinoceroses, making this syndrome a potential common denominator to various diseases described in captivity ...

OECD countries' politicians follow each other

The more democratic a country is, the greater the probability that its politicians decide in the same way as in neighboring countries, without further analysis. This is according a research group that has studied political ...

Eggshell-based surgical material for skull injuries

A bioactive polymer-ceramic composite for fixing implants and restoring bone defects in the skull was developed by an international group of materials scientists from the NUST MISIS Center for Composite Materials. An innovative ...

How plastics could help build a sustainable future

The disposal of plastics is a global problem. They are nearly indestructible in natural conditions but are discarded worldwide on a large scale. The world produces around 359 million metric tons of plastics each year. Nature ...