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  • Irish Chronicles Document Links Between Volcanoes and Weather
    A study of over 40,000 written entries in Irish Annals and ice core measurements shows a strong corr...Read more

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    Irish Chronicles Document Links Between Volcanoes and Weather

    A study of over 40,000 written entries in Irish Annals and ice core measurements shows a strong correlation between the occurrence of volcanic eruptions and extreme cold weather in Ireland over a 1200 year period. Data analyzed in this study cover the period from 431 to 1649, during which time up to 48 volcanic eruptions are identified in Greenland ice core records through deposition of volcanic sulfate in annual layers of ice. You can find the study (open access), published on 6 June 2013 in IOP Publishing's journal Environmental Research Letters, at http://iopscience.iop.org/1748-9326/8/2/024035/article. Find out more about how volcanoes can influence climate.
  • EF-5 Tornado in El Reno, Oklahoma Widest Ever Recorded in US
    The EF-5 tornado that hit El Reno, Oklahoma on May 31st was the widest ever recorded in the US, acco...Read more

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    EF-5 Tornado in El Reno, Oklahoma Widest Ever Recorded in US

    The EF-5 tornado that hit El Reno, Oklahoma on May 31st was the widest ever recorded in the US, according to the National Weather Service in Norman Oklahoma. The tornado, which remained on the ground for 40 minutes and reached 2.6 miles across (4.2 km), took the lives of 18 people including storm chasers Tim Samaras, Paul Samaras and Carl Young. For more information on the tornado, visit http://ow.ly/i/2hfDG.
  • Atmospheric CO2 Level Tops 400 ppm
    During the week of May 13th, the CO2 level at the Mauna Loa Observatory in Hawaii topped 400 ppm rep...Read more

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    Atmospheric CO2 Level Tops 400 ppm

    During the week of May 13th, the CO2 level at the Mauna Loa Observatory in Hawaii topped 400 ppm repeatedly. Daily levels of CO2 can vary due to weather, and there are seasonal trends as well. The level of atmospheric greenhouse gases continues to increase, now over 120 ppm since the Industrial Revolution began. For more on the Keeling Curve, see http://keelingcurve.ucsd.edu/. Find out more about greenhouse gases and warming.
Lactarius deliciosus
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Kingdom Fungi

Though the outward appearance of many fungi may resemble plants, they are probably more closely related to animals. Fungi are not capable of performing photosynthesis, so must get their nourishment from other sources. Many fungi absorb organic matter directly from their immediate environment, such as in the soil. Many others feed on dead and decaying organisms and therefore have an important role in the recycling of nutrients in natural systems. Still others feed on living organisms. Athlete's foot is a common fungus which feeds on a living host - you!

When you think of fungi, you probably think of the mushrooms we can buy at the supermarket or hunt for in the woods. However, those "mushrooms" are really just the "fruiting bodies" produced by the fungus for reproduction and represent only a very small part of a much larger organism which lives below the ground. Many species of soil-dwelling fungi, such as those that produce mushrooms, form intimate associations with tree roots and assist in absorbing nutrients from the environment in exchange for food from the tree. Biologists are just beginning to understand and appreciate the role of these "mycorrhizal" fungi in natural ecosystems.

Fungi come in a wide variety of sizes and forms, and many have great economic importance. Tiny, one-celled yeasts are important for baking breads and fermenting wines, beers and vinegars. The pharmaceutical industry relies heavily on several species of fungi for the production of antibiotics, most notably, Penicillin, from a strain of Penicillium mold. If you leave your bread on the counter too long, you'll be able to observe a strain of the Penicillium mold for yourself!

Last modified January 19, 2010 by Randy Russell.

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The Spring 2010 issue of The Earth Scientist, focuses on the ocean, including articles on polar research, coral reefs, ocean acidification, and climate. Includes a gorgeous full color poster!

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