3 Billion-Year-Old Sulfur-Eating Microbes May Be the Oldest Fossils Ever Found
What's the News: Geologists have found fossils of microorganisms from 3.4 billion years ago, which may be the oldest fossils ever uncovered. Since these microbes date from a time when Earth's atmosphere was still oxygen-free, astrobiologists could look ...
August 23, 2011
How to Turn a Frog Egg Into a Robot's Artificial Nose
That's because e-noses use quartz rods designed to vibrate at a different frequency when they bind to a target substance. But this is not a foolproof system, as subtly different substances with similar molecular weights may bind to the rod, producing a ...
August 24, 2010
How Top Watchmakers Intervene in Auctions
Watch magazines and retailers hailed the sale, at an auction in the lush Mandarin Oriental Hotel on the River Rhone. Omega trumpeted it Omega once equaled Rolex as a brand with appeal to both collectors and consumers, but in the 1980s, Omega sought ...
October 8, 2007
Earth Raised up Its Magnetic Shield Early, Protecting Water and Emerging Life
In South Africa, study leader John Tarduno and his team found quartz with iron tucked inside that had remained unchanged in all those years. Using a specially designed magnetometer and improved lab techniques, the team detected a magnetic signal in ...
March 5, 2010
Rock-Solid Science: A 6-Mile-Wide Space Rock Did Wipe Out the Dinosaurs ...
The team also based their conclusions on “shocked” quartz. Quartz is shocked when it is hit very quickly by a huge force; shocked quartz is found only at asteroid impact locations and nuclear explosion sites. The abundance of shocked quartz in the rock ...
March 8, 2010
Date of Birth for "Peking Man" Gets Pushed Back 200000 Years
For the new study, published in Nature, researchers used a dating method that relies on the impact of cosmic rays on aluminum and beryllium isotopes in minute quartz grains. The isotopes decay at a known rate when they're exposed to cosmic radiation on ...
March 11, 2009
Here we are drinking coffee and tweeting and otherwise going about our lives, generally not giving much thought to the protection that the Earth’s magnetic field affords us from the solar wind. Now, new findings in Science say that this protective shield originated even 200 million years earlier than scientists had previously thought, perhaps protecting the planet’s water from evaporating away and aiding the rise of life on the early Earth. To know about the planet’s magnetic field three and a half billion years ago, you need iron, which records not only the direction but also the strength of the magnetic field when it forms. Not only was the Earth’s magnetic field strength quite a bit less than it is today, but also the magnetopause—the furthest extent of the field, where it meets the incoming solar wind—stretched only half as far out from the planet as it does today. Pushing the existence of Earth’s magnetic field back further into the planet’s history helps fill in the picture of how life arose, the researchers argue, and it also has implications for those hunting extraterrestrial life. Life as we know it, they say, requires not only liquid water, but also the right magnetic field strength for that water to last over the long term, says Tarduno.
Will we ever get a solid answer on what killed the dinosaurs . According to a new “K-T Boundary Dream Team” comprising of 41 international experts, including geophysicists and paleontologists, yes, the question has been settled: An asteroid is... For years, scientists have argued over different theories of what killed the dinos–including one hypothesis that has gained ground recently, which suggests that massive volcanic activity in India’s Deccan Traps wiped them out 65 million years ago. However, the latest expert panel stuck to the asteroid theory, saying a massive impact wiped out the dinos and more than half of the Earth’s other species. After studying all the available data on the Cretaceous-Tertiary (K-T) mass extinction, the panel concluded that the catastrophic event was caused by a 6-mile-wide asteroid that struck “Ironically, while this hellish day signalled the end of the... The KT extinction was a pivotal moment in Earth’s history, which ultimately paved the way for humans to become the dominant species on Earth”. The element iridium is rare in the Earth’s crust but is common in asteroids, and can be found at asteroid impact sites. Fully half of all mammals species at the time were wiped out.
The revised date could change the timeline and number of migrations of the Homo erectus species out of Africa and into Asia [ LiveScience ]. . Homo erectus were the first hominids to leave the evolutionary cradle of Africa. The species had a distinctive barrel-shaped torso and stood [57 to 70 inches] tall, walking upright in a similar way to modern humans [ Nature News ]. Researchers had previously suggested that one wave of Homo erectus wayfarers migrated out of... But new fossil discoveries, coupled with the new dating of Peking Man, are forcing paleoanthropologists to rethink this scenario. erectus passed through central Asia and southern Mongolia to reach the Zhoukoudian vicinity [ Science News ]. Researchers also note that a huge swath of primeval forest separated the two populations, which they say supports the double-migration... For the new study , published in Nature , researchers used a dating method that relies on the impact of cosmic rays on aluminum and beryllium isotopes in minute quartz grains.
Luxuries: Designer cuckoo clocks, red clothes, accessories
One-day-movement Chalet-style cuckoo clock by August Schwer, $475 at cuckoo-palace.com. • Contemporary one-day wind cuckoo clock by Rombach and Hass Simple Line, $498.75 at clockshoppes.com. • One-day cuckoo wall clock by River City Clocks, $167.99 at ...
October 26, 2014
River City Bird and Well Quartz Novelty Clock - German Chalet
This clock does not have a cuckoo ... Please see the River City Clocks Warranty Page for more information about the warranty. Blue bird moves back and forth. Man and woman swing back and forth on the pendulum swing. Accurate quartz movement.
December 10, 2013
River City Five Maple Leaves and One Bird One Day Hand-Carved Cuckoo Clock
Please see the River City Clocks Warranty Page for more information about the warranty. Hand-carved by master craftsman in the Black Forest of Germany. All brass mechanical movement. Cuckoo bird cuckoos the hour at the top of every hour. Traditional five ...
December 10, 2013
Going cuckoo about real Swiss cuckoo clocks
What could come as a surprise however is learning that Switzerland is not in fact the home of the cuckoo clock and that many of the cheap quartz clocks on sale are ... It might sound un-Swiss that the movement inside Lötscher clocks is German, but there ...
November 23, 2006