An international team of researchers has confirmed a severe perkinsea infection (SPI) in captive frogs in the U.K. In their paper published in the journal Biology Letters, the researchers describe the circumstances surrounding ...
The Menetries' tiger moth (Arctia menetriesii) is one of the rarest and most poorly studied Palaearctic moth species. Even though its adult individuals are large and brightly colored, they are difficult to spot, because they ...
Plants & Animals
May 27, 2021
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3
Aquaculture is becoming increasingly important as a source of food for our growing population. Worldwide, billions of fish are farmed and eaten every year, and humans now consume more farmed than wild caught fish.
Plants & Animals
Apr 21, 2021
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8
Perhaps no other ocean creature lives in the human imagination like the great white shark. But while great white sharks might be plentiful in the minds of beachgoers across the country, there are only a handful of places ...
Plants & Animals
Apr 21, 2021
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48
Life expectancy in the United States dropped in 2020 due to COVID-19, but, for American adults without a college degree, the increase in mortality in adulthood occurred even earlier, according to a new study authored by Anne ...
Social Sciences
Mar 08, 2021
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73
In 2008, Cyclone Nargis killed more than 138,000 people in Myanmar. It was a powerful category 3 or 4 storm at landfall, but tropical storms with similar wind speeds that year resulted in far fewer fatalities in other countries.
Social Sciences
Nov 04, 2020
4
59
The Columbia River is home to one of the West Coast's most important Chinook salmon runs. Through late spring and early summer, mature fish return from the sea and begin their arduous journey upriver to spawn. In recent years, ...
Ecology
Oct 19, 2020
4
1897
Oral avian trichomonosis is an infection caused by parasitic protozoon Trichomonas gallinae. By infecting mainly the oropharyngeal and crop mucosa, the severe lesions can cause the death of the birds due to suffocation or ...
Ecology
Oct 05, 2020
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4
Fences are one of humanity's most frequent landscape alterations, with their combined length exceeding even that of roads by an order of magnitude. Despite their ubiquity, they have received far less research scrutiny than ...
Ecology
Sep 30, 2020
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5
If you dive in the Mediterranean Sea, the cluster anemone is among the most fascinating and magnificent corals you could see. You can find it on rocks or sponges, in scarcely lit areas such as sea caves and gorges, where ...
Ecology
Sep 29, 2020
0
7
It is estimated, based on archaeological data and written records from European settlers, that from 8 to 140 million indigenous people lived in the Americas when the 1492 voyage of Christopher Columbus began a historical period of large-scale European interaction with the Americas. European contact with what they called the "New World" led to the European colonization of the Americas, with millions of emigrants (willing and unwilling) from the "Old World" eventually resettling in the Americas.
While the population of Old World peoples in the Americas steadily grew in the centuries after Columbus, the population of the American indigenous peoples plummeted. This was somewhat caused by direct conflict and warfare with European colonizers and other Native American tribes, but probably mostly due to their susceptibility to old world diseases [smallpox, influenza, bubonic and pneumonic plagues, etc.] that they had never before been exposed to. The extent (and to a lesser extent the causes) of this population decline have long been the subject of debate.
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