Science & Technology
The chance of one occurring within the next 50 years is also slightly higher than previously estimated.
The findings, published this week in the journal Marine Geology, are based on data that is far more detailed and comprehensive than anything prior to this. It used measurements from 195 core samples containing submarine landslide deposits caused by subduction zone earthquakes, instead of only about a dozen such samples in past research.
The peptide, Acegram, was developed at a laboratory in the Russian Ural city of Chelyabinsk.
The molecule is said to have a very strong regenerating effect due to attracting healthy cells to injured, irritated areas in the human body.

Individual crystals of synthetic zhemchuzhnikovite, prepared by Igor Huskić, McGill University.
Now, a surprising discovery by scientists in Canada and Russia reveals that MOFs also exist in nature—albeit in the form of rare minerals found so far only in Siberian coal mines.
The finding, published in the journal Science Advances, "completely changes the normal view of these highly popular materials as solely artificial, 'designer' solids," says senior author Tomislav Friščić, an associate professor of chemistry at McGill University in Montreal. "This raises the possibility that there might be other, more abundant, MOF minerals out there."
The twisting path to the discovery began six years ago, when Friščić came across a mention of the minerals stepanovite and zhemchuzhnikovite in a Canadian mineralogy journal. The crystal structure of the minerals, found in Russia between the 1940s and 1960s, hadn't been fully determined. But the Russian mineralogists who discovered them had analyzed their chemical composition and the basic parameters of their structures, using a technique known as X-ray powder diffraction. To Friščić, those parameters hinted that the minerals could be structurally similar to a type of man-made MOF.
In an unpublished paper posted today to arXiv, Caltech astronomer Ben Montet and Joshua Simon of the Carnegie Institute describe the results of a new photometric analysis of Tabby's Star, which was first flagged in the Kepler Space Telescope's database by citizen science astronomers.
By carefully examining all the full-frame images collected during Kepler's observational campaign, Montet and Simon discovered something astonishing: Not only did the star's light output occasionally dip by up to 20 percent, its total stellar flux diminished continuously over the course of four years.
For the first 1000 days of Kepler's campaign, Tabby's Star decreased in luminosity by approximately 0.34 percent per year. For the next 200 days, the star dimmed more rapidly, its total stellar flux dropping by 2 percent before leveling off. Overall, Tabby's Star faded roughly 3 percent during the four years that Kepler stared at it—an absolutely enormous, inexplicable amount. The astronomers looked at 500 other stars in the vicinity, and saw nothing else like it.
"The part that really surprised me was just how rapid and non-linear it was," Montet told Gizmodo. "We spent a long time trying to convince ourselves this wasn't real. We just weren't able to."
That's what drew Matthew Pasek, a geoscientist at the University of Southern Florida, to study fulgurites.
"Fulgurite" is the technical term for the hollow rod of glass that lightning can create when it strikes sand.
They're surprisingly common; across the planet, lightning strikes about 45 times per second and creates about 10 fulgurites from those strikes.
In the process of studying fulgurites, Pasek found a new way to calculate how much energy a bolt of lightning carries. The width of the hollow tube, he learned, is correlated with the strength of the lightning bolt.
Biologist Robert Pitman snapped the image while on a research expedition in 2009 — but it wasn't the first time he had observed this unusual protective behavior.
"It's a logical next step beyond fingerprint scanning," said Geoff Blaber of CCS Insight, a market analysis firm. And Samsung's move to include iris scanning in its upcoming Galaxy Note7 phone could open the door to put the biometric security technology in the hands of more people.
Samsung introduced the Samsung Galaxy Note7, its latest large screen phone, on Tuesday. It will go on sale in the U.S. on Aug. 19, with advance orders starting Wednesday. The 5.7-inch, high-definition screen phone-tablet, or phablet, is Samsung's latest competitor to similarly sized iPhones from chief rival Apple, which broke ground with fingerprint sensors in 2013 with the introduction of iTouch ID.
During a recent demonstration in San Francisco for The Chronicle, Samsung executive Justin Denison held the phone about arms length at eye level and unlocked it almost instantly.
The phone's owner can also use the fingerprint scanner or a PIN code. The biometric technology will work with Samsung's mobile security platform, called Knox, that allows the owner to create a special folder for work documents or apps that a child or spouse can't access. "If you share the phone with a child or friend, you don't want them to get into everything," Denison said.
The classic advice for the privacy-minded to protect themselves from internet trackers and targeted ads on websites doesn't work very well against the newest breed of sophisticated snoopers who are spying on you using everything from your iPhone's battery status level to the kinds of fonts installed on your browser, Princeton researchers say in a massive new analysis of 1 million web sites, the largest of its kind.
The "trackers" find out what kind of person you are, and then serve you targeted ads. If you visit those sites, data about you is gathered up and resold to other marketers. You read the news for free (sometimes) and someone gets paid to write it, and funny cat picture sites get their server costs covered.
But the trackers are also used to build profiles of consumers over which they have no control.
"Several features of the web...are being used or abused, depending on how one looks at it, by these tracking companies and various entities in the ad tech ecosystem," said study co-author Arvind Narayanan, an associate professor of computer science at Princeton. "They're being used in sneaky ways to track where users are going across the web."
The Princeton researchers scoured the internet's top sites and found signs of aggressive tracking. Two of the top sites each had over 81,000 trackers on them. Most of the tracking, however, was consolidated among a few giants. Google, Facebook, and Twitter were the only third-party trackers present on more than 10 percent of the sites.

Spectacular and dangerous weather phenomenon, known as a microburst, spotted over Phoenix, Arizona, Monday, July 18
Monday, while covering the effects of these spectacular monsoon related thunderstorms for a local Phoenix television network, helicopter pilot Jerry Ferguson captured an instant of extreme atmospheric action in which a massive microburst was affecting the metro area.
Majestic from the distance, but very intense and damaging on the ground, this spectacle of nature seemed to last forever as described by local residents.
Comment: For related articles, see also:
- Stunning photo and video show a microburst dumping rain and wind over Phoenix, Arizona
- Sudden 'microburst' causes damage near Rome, New York State
- Freak weather including a microburst and intense lightning storm hits Campinas, Brazil
- Delta Flight 191 crash: 30 years since a 'microburst' caused tragedy at Dallas/Fort Worth International Airport

A single cell is removed from a human embryo to be used in generating embryonic stem cells for scientific research.
The agency last year issued a moratorium for such funding while it studied the issue further. But NPR is reporting the NIH plans to lift that reprieve and allow scientists to conduct so-called "Chimera" experiments under strict and closely monitored parameters.
"They want to take human stem cells and put them inside these animal embryos, in the hopes that the human stem cells, which can become any kind of cell or tissue in the body, will become integrated into the embryos and then develop into animals that have partially or even fully human parts in their bodies," said NPR health correspondent Rob Stein on Thursday.
Scientists say the experiment could lead to major medical breakthroughs that could save countless human lives, such as the ability to grow human organs that could be used to save the lives of patients in need of transplants.
Comment: More useless chimera research that led to zero health breakthroughs:
- Now scientists create a sheep that's 15% human
- Scientists Engineer "Chimera" Primates to Combat Human Ailments












Comment: New Windows 10 comes complete with iris scans, facial recognition and fingerprint scanners