Earth's atmosphere contains fine particles suspended in the air, known as aerosols, occurring from natural sources, such as dust from deserts, volcanic ash, smoke from forest fires, sea salt from ocean spray and organic compounds ...
NGC 685 takes center stage amid faintly twinkling stars on an inky black background. This galaxy is clearly a barred spiral galaxy with its bright center bar and patchy, curving arms. It is about 58 million light-years away ...
Astronomy
Oct 11, 2023
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15
Jacaranda season is beginning across Australia as an explosion of vivid blue spreads in a wave from north to south. We think of jacarandas as a signature tree of various Australian cities. Sydney, Melbourne, Adelaide and ...
Plants & Animals
Oct 11, 2023
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14
Up to 45% of all known flowering plant species across the globe could be under threat of extinction with the plant family Orchidaceae (orchids) among the most threatened, according to a new report.
Plants & Animals
Oct 10, 2023
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14
All particles that reach the atmosphere cause different chemical reactions. Particles come partly from natural sources such as volcanic eruptions and forest fires, and partly from pollution and emissions. Aerosol researcher ...
Earth Sciences
Oct 9, 2023
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5
Earth's ocean is incredibly vast. Some parts of it are so remote that the nearest human habitation is the International Space Station.
Earth Sciences
Oct 6, 2023
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37
A technology being studied to curb climate change—one that could be put in place in one or two decades if work on the technology began now—would affect food productivity in parts of Earth in dramatically different ways, ...
Earth Sciences
Oct 5, 2023
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32
Diseases are among the major causes of tree mortality in both forests and urban areas. New diseases are continually being introduced, and pathogens are continually jumping to new hosts, threatening more and more tree species. ...
Plants & Animals
Oct 3, 2023
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15
It's easy to get swept up in the swirling starry arms of this intermediate spiral galaxy, NGC 4654, in the constellation Virgo. The galaxy has a bright center and is labeled "intermediate" because it has characteristics of ...
Astronomy
Oct 3, 2023
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43
Commercial whaling in the 20th century decimated populations of large whales but also appears to have had a lasting impact on the genetic diversity of today's surviving whales, new research from Oregon State University shows.
Plants & Animals
Oct 2, 2023
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