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The absolute number of war deaths [1] have been
declining since 1946. In some years in the early post-war era, around
half a million people died through direct violence in wars. In recent years,
the [2] yearly death toll tends to be less than 100,000.
The decline of the absolute number of
battle deaths can be seen in the visualization here that shows global battle
deaths per year by world region. [3]There are two marked periods of relative
peace: the Asia and Oceania (Korea, early 1950s) and Asia and Oceania (Vietnam,
1971). There has been a recent increase in battle deaths driven by
conflict in the Middle East, particularly in Syria, Iraq and Afghanistan.
For more recent years, [4]I show these
‘state-based’ conflict deaths [5] alongside battle deaths in
‘non-state’ conflicts (where two or more organisations are fighting but no
state is involved), and also violent deaths in ‘one-sided violence’ (where
there is only one organised aggressor, such as in genocidal violence).
We see that, in recent years, state-based conflicts form
the majority of such deaths, [6] however, the genocide in Rwanda in
1994 stands out for its very high death-toll.
[7] The stacked area chart here shows the trend of the number of ongoing
conflicts each year has risen. This
increase however only relates to civil conflicts within states. Conflicts
related to the expansion or defence of colonial empires ended with [8]decolonisation.
Conflicts between states have almost ceased to exist.
[9]The casualties of man wars are known precisley,
especially those of the Korean war: whereas
1,200,000 died during the the Korean War (1950–1953), other wars had ‘just’
1,000 victims. [10]Unfortunately, statistics on the number of wars
[11]need to be interpreted alongside data on the size of these
conflicts.
The increase in the number of wars is predominantly an increase of smaller conflicts. This follows from the previously shown declining number of war victims while the number of conflicts increased. The decreasing deadliness of conflicts can be seen in the bar chart.
Biotechnology can be broadly defined as “using living
organisms or their products for commercial purposes.” As such,
biotechnology [12] was practiced since the beginning of
recorded history in such activities as [13] farming, solar energy,
and cheese manufacturing.
A narrower and more specific definition of biotechnology is
“the commercial application of living organisms or their products, which
involves the deliberate manipulation of their DNA molecules.” This
definition [14] insinuates a set of laboratory techniques
developed within the last 20 years that have been responsible for the
tremendous scientific and commercial interest in biotechnology, [15] the
founding of many new companies, the redirection of research efforts, and
financial resources among established companies and universities.
[16] Combining DNA from different existing organisms (plants, animals, insects, bacteria, etc.) results in
modified organisms with a combination of traits from the parents. The sharing
of DNA information takes place naturally through sexual reproduction and has
been exploited in plant and animal breeding programs for many years.
[17] Accordingly, sexual reproduction can
occur only between plants and animals of the same species. [18] A
Holstein cow can be mated with a Hereford bull because the two animals are
different breeds of the same species, cattle. But trying to mate a cow
with a horse, a different species of animal, would not be successful.
What’s new since 1972 is that scientists have been able to
identify the specific DNA genes for many [19] in-demand traits
and transfer only those genes, usually carried on a plasmid or virus, into
another organism. This provides a method to transfer DNA between any living
cells (plant, animal, insect, bacterial, etc.). Virtually any trait found in
nature can [20], in principal, be transferred into any chosen
organism. An organism modified by genetic engineering is called transgenic.
Specific applications of genetic
engineering [21] are abundant and increasing rapidly in
number. [22]
In 1891, the federal government assumed responsibility from
the states [23] regulating immigration through the Immigration
Act of 1891, which established the Office of Immigration (later the Bureau of
Immigration) to administer immigration affairs. [24] It also
appropriated money to build a new immigrant inspection station on Ellis Island.
The Immigration Act assigned the Marine Hospital Service (later the Public
Health Service) the responsibility of examining the health of immigrants
entering the United States.
(1) A number of older buildings from the island’s time as a
military post [25] were adapted for reuse. (2) Before
construction of Ellis Island’s first immigration depot began, the island was
doubled in size with landfill. (3) Ellis Island’s first immigration
building, constructed of Georgia pine, opened on January 1, 1892. [26]
Due to the economic depression at the time,
immigration was [27] ceaseless and Ellis Island
inspectors had no difficulty processing the fewer than 20,000 immigrants who
arrived annually. On June 15, 1897, a fire destroyed the complex of wooden
buildings.[28]
The government announced almost immediately that Ellis
Island would be rebuilt with fireproof buildings. The New York architectural
firm of Boring and Tilton [29] were awarded the contract
after a competition entered by five outstanding firms, including McKim, Mead
& White.
The first building to be built was the new main immigration
building, which opened on December 17, 1900. Following its completion, the
kitchen and laundry and powerhouse buildings were [30] worked
on in 1901 and the island was enlarged by landfill to make room for a
hospital complex. In March of 1902, the main hospital building opened.[31] The
hospital having the space and equipment to care for 125 patients but
it was still not enough—the hospital was overwhelmed with patients
diagnosed with trachoma, favus, and other contagious illnesses
that warranted exclusion. Over the next seven years, additional buildings
were added to the hospital complex [32] , including the Hospital
Addition / Administration building the New Hospital Extension, and the
Psychopathic Ward. [33] The island was also enlarged once more using
landfill, which allowed for the construction of contagious disease hospital and
isolation wards. Later, additional support buildings were added.
A gene that keeps switchgrass forever young could have
far-reaching [34] repercussions for the development of the plant as
a biofuel crop, according to U.S. Department of Agriculture (USDA) scientists.
Inserting a specific gene called corngrass from
corn into switchgrass essentially keeps the perennial grass in its juvenile
form [35]a plant doesn’t flower, doesn’t produce seeds, and doesn’t
have a dormant growth phase. [36] Because of these changes, the
sugars [37] were making up the plant starch are more readily
available for conversion into cellulosic ethanol.
According to Agricultural Research Service (ARS) geneticist
Sarah Hake, the starch in these transgenic plants [38] stay inside
the stem because it isn’t needed elsewhere for nourishing flower buds and
blossoms. [39] As a result, starch levels can increase as much
as 250%, which increases the sugars that can be fermented into ethanol.
Hake [40] director of the ARS Plant
Gene Expression Center in Albany CA teamed with University of
California–Berkeley plant geneticist George Chuck to conduct this
investigation. ARS is the USDA’s chief intramural scientifific research agency,
and this work supports the USDA priority of developing new sources of bioenergy.
The scientists [41] seen that the leaves
in the transgenic switchgrass are not nearly as stiff [42] like the
leaves in switchgrass cultivars that haven’t been modified. In
addition, they determined that leaf lignin is slightly different in the
transgenic switchgrass than leaf lignin in other plants. This could lead to new
findings on how to break down the sturdy lignin and release sugars for
fermentation [43], a development that will be essential to the commercial
production of cellulosic ethanol.
The researchers are now introducing DNA segments called
genetic promoters that would “turn on” the expression of the corngrass gene in
aboveground switchgrass shoots. This could help increase root mass development
that otherwise would be inhibited by the gene. Hake and Chuck also suggest that
developing nonflowering switchgrass varieties would eliminate the possibility
of cross pollination between transgenic switchgrass cultivars [44] or other
switchgrass cultivars.