Lifeboat Foundation

A dental investigator with the National Institutes of Health will begin clinical human trials this year of a laser technique that stimulates stem cells for the regeneration of teeth and, possibly, other human body parts.

Scientists at the Max Planck Institute for Solar System Research (MPS), the Georg August University of Göttingen, and the Sonneberg Observatory have discovered 18 Earth-sized planets beyond the solar system. The worlds are so small that previous surveys had overlooked them. One of them is one of the smallest known so far; another one could offer conditions friendly to life. The researchers re-analyzed a part of the data from NASA’s Kepler Space Telescope with a new and more sensitive method that they developed. The team estimates that their new method has the potential of finding more than 100 additional exoplanets in the Kepler mission’s entire data set. The scientists describe their results in the journal Astronomy & Astrophysics.

Somewhat more than 4000 planets orbiting stars outside our solar system are known so far. Of these so-called exoplanets, about 96 percent are significantly larger than our Earth, most of them more comparable with the dimensions of the gas giants Neptune or Jupiter. This percentage likely does not reflect the real conditions in space, however, since small planets are much harder to track down than big ones. Moreover, small worlds are fascinating targets in the search for Earth-like, potentially habitable planets outside the solar system.

The 18 newly discovered worlds fall into the category of Earth-sized planets. The smallest of them is only 69 percent of the size of the Earth; the largest is barely more than twice the Earth’s radius. And they have another thing in common: all 18 planets could not be detected in the data from the Kepler Space Telescope so far. Common search algorithms were not sensitive enough.

Continue reading “Eighteen Earth-sized exoplanets discovered” »

Digit the robot will place orders right on customers’ doorsteps.

University of Chicago scientists are part of an international research team that has discovered superconductivity—the ability to conduct electricity perfectly—at the highest temperatures ever recorded.

A cache of microscopic fossils from the Arctic hints that fungi reached land long before plants.

More than 130 years after its discovery, scientists just got their first high-tech peek at the unexpected crystal structure inside the Ram’s Horn.

The nonprofit Allen Institute in Seattle has produced a visualization of human cell division that promises to be useful for professional scientists and curious amateurs alike.

During the height of the Civil War, the Confederate Surgeon General commissioned a guide to traditional plant remedies of the South, as battlefield physicians faced high rates of infections among the wounded and shortages of conventional medicines. A new study of three of the plants from this guide—the white oak, the tulip poplar and the devil’s walking stick—finds that they have antiseptic properties.

Scientific Reports is publishing the results of the study led by scientists at Emory University. The results show that extracts from the plants have antimicrobial activity against one or more of a trio of dangerous species of multi-drug-resistant bacteria associated with wound infections: Acinetobacter baumannii, Staphylococcus aureus and Klebsiella pneumoniae.

“Our findings suggest that the use of these topical therapies may have saved some limbs, and maybe even lives, during the Civil War,” says Cassandra Quave, senior author of the paper and assistant professor at Emory’s Center for the Study of Human Health and the School of Medicine’s Department of Dermatology.

Continue reading “Civil War plant medicines blast drug-resistant bacteria in lab tests” »

Governments are becoming ever more reliant on digital technology, making them more vulnerable to cyber attacks. In 2007, Estonia was attacked by pro-Russian hackers who crippled government servers, causing havoc. Cyber attacks in Ukraine targeted the country’s electricity grid, while Iran’s nuclear power plants were infected by malware that could have led to a nuclear meltdown.

In the US, president Trump recently declared a “national emergency” to recognise the threat to US computer networks from “foreign adversaries”.

Politically-motivated cyber attacks are becoming increasingly commonplace but unlike traditional warfare between two or more states, cyberwarfare can be launched by groups of individuals. On occasion, the state is actually caught in the crosshairs of competing hacking groups.

Continue reading “Cyber attacks are rewriting the ‘rules’ of modern warfare—and we aren’t prepared for the consequences” »