Earth

  1. Agriculture

    Herbal Herbicides

    Scientists are tapping plants, and the self-defense chemicals they make, for new weed killers, many of which may find use in organic farming.

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  2. Earth

    National Environmental Education Week

    The third annual National Environmental Education Week will take place April 15-22, 2007, culminating with Earth Day on April 22. This site provides information about activities planned for that week. Go to: http://www.eeweek.org/

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  3. Earth

    High and Dry: Pollution may stifle mountain precipitation

    Trends seen in meteorological data gathered on a Chinese mountaintop suggest that air pollution reduces the amount of precipitation that falls in high-altitude regions.

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  4. Earth

    DNA pinpoints poached ivory tusks

    Scientists tracked the origin of an illegal ivory shipment to Zambia by using an improved DNA-analysis technique to study the confiscated tusks.

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  5. Earth

    Not-So-Perma Frost

    The world's warming climate, as well as ecological shifts in the timing and frequency of wildfires in boreal forests, pose an increasing threat to Arctic permafrost.

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  6. Earth

    Traces of Trouble

    Scientists and engineers are investigating how to stem the flow of naturally-occurring and synthetic estrogens that, when released from waste water treatment plants and livestock operations, can harm aquatic life.

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  7. Earth

    Equal Opportunity Outcome: Different pollutants show same impact

    At concentrations present in the environment, each of three dissimilar toxic agents can seize control of a signaling pathway that regulates developing cells in the central nervous system.

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  8. Earth

    Subglacial lakes may influence ice flow

    The flow of water into and out of massive, ice-covered lakes in Antarctica may influence the speed at which the overlying glaciers move toward the sea.

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  9. Earth

    Ozone Depletion and Recovery

    Answers to questions about ozone depletion and the recovery of the ozone hole are now easy to find by researchers, as well as the general public, through a new online index developed by NOAA’s Earth System Research Laboratory. The site uses simple graphs and charts to track progress in reducing the threat to Earth’s ozone […]

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  10. Earth

    Stroke of Good Fortune: A wealth of data from petrified lightning

    The lumps of glass created when lightning strikes sandy ground can preserve information about ancient climate.

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  11. Earth

    Electronics Recycling

    What do you do with your used, broken, or obsolete electronic devices? Where can you take your electronics, and what should you look for to protect both your identity and the environment? You can find the answers at the Electronics Industry Alliance’s recycling Web site, which provides an online guide to electronics recyclers and disposal […]

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  12. Earth

    Why So Dry? Ocean temperatures alone don’t explain droughts

    Evidence from ancient dunes points to three periods of prolonged drought in the U.S. Great Plains, but finding their causes may be more complex than previously supposed.

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