New research suggests that oil
drilling decades ago may have triggered earthquakes in the Los Angeles region,
including the 1933 quake that killed more than 100 people. If confirmed, it
would be the first time oil operations have been linked to an earthquake in the
US. Scientists from the US Geological Survey identified several quakes in the
1920s and 1930s that were caused by industrial activities, including the 6.4
magnitude jolt that struck Long Beach in 1933. Until now, researchers are
pretty much assumed that earthquakes in the LA area are natural and that
induced earthquakes are either not happening or not significant. Drilling techniques
have changed through the decades, so the findings don’t necessarily point to a
current risk. Man made quakes have been in the spotlight after an uptick in
seismic activity in Oklahoma and Texas. Studies have linked the spike to the practice
of injecting wastewater into the ground after drilling for oil and gas using
technologies such as hydraulic fracturing. The induced quakes have rattled
nerves and caused property damage, but no deaths. Southern California’s oil
boom sparked in 1892 when oil was discovered near what would become the site of
Dodge Stadium, north of downtown LA. After tapping the wells dry, drillers
headed to points south, including Santa Fe Springs, Inglewood, Torrance and
Long Beach. In the study, researchers list of quakes between 1915 and 1930 and
reviewed oil permits and drilling operations during that period. They found 13
cases of shaking that may have been caused by ramping up of oil production. The
Long Beach quake hit not long after operators began drilling wells at different
angles. Some 115 people died, and many schools collapsed, spurring new laws
requiring stricter building standards.
Friday, 11 November 2016
Your DNA Can Tell How Many Kids You'll Have
The age at which you will have your
first child and the number of kids you are likely to have may be encoded in
your DNA, say scientists who found that genetic data can be used to accurately
predict our reproductive behavior. The study, led by researchers at University
of Oxford, includes an analysis of 62 datasets with information from 2,38,064
men and women on the age at which they had their first child and 3,30,000 men
and women for the number of children. Until now, reproductive behavior was
thought to be linked to personal choices or social circumstance. Researchers also
found that women with DNA variants for postponing parenthood also have bits of
DNA code associated with later onset of menstruation and later menopause. The study
shows that DNA variants linked with the age at which people have their firstborn
are also associated with characteristics reflecting reproduction and sexual
development, such as the age at which girls have their first period, when the
voice breaks in boys and at what stage women experience their menopause.
NASA Develops Technology To Prevent Flight Delays
NASA has developed a way to prevent
flight delays using a new technology that safely increases the number of
airplanes that can land on the same runway at busy airports by more precisely
managing the time between each aircraft arrival. Less time in the air also
means additional savings in expensive jet fuel and reduces aircraft emissions,
and passengers would enjoy an increased chance their flights – connecting or
otherwise – will arrive on time. Current air traffic control technology and
procedures can predict arrival times to within a minute or so. The Flight Deck
Interval Management (FIM) is expected to enable controllers and the airport to
count on aircraft arriving within five to ten seconds of a predicted time. The cockpit-based
prototype FIM system combines NASA developed software with commercially
available hardware and connects the system to the aircraft’s onboard
information and navigation systems. FIM allows controllers to deliver the
aircraft more precisely and more predictably, which is a huge advantage that
helps the airlines and airport operators more efficiently manage air traffic to
minimize delays.
Soon, Milk Chocolate With Benefits Of Dark Without The Bitter Taste
Scientists have found a way to give
milk chocolate the nutritional benefits of dark chocolate without affecting the
taste. Adding chocolate gives it the same antioxidant property of dark
chocolate, according to researchers from North Carolina State University. The compounds
were made into a sweet edible powder, which was then incorporated into product.
A total of 80 people were given samples and normal milk chocolate and results
showed they were liked an equal amount. The tests showed that the amount of
peanut skin added to the chocolate did not affect the taste enough for people
to realize the difference. If applied to commercial products, peanut skin
extracts would allow consumers to enjoy mild tasting products and have exposure
to compounds that have proven health benefits. As peanut skins are a byproduct
of the peanut industry, the author is hoping their work will provide a purpose
for an otherwise discarded product.
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