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Geology News
Hawaii Current Events

Beach sand is much more than just little brown granules. It is comprised of microscopic shells, pieces of coral, tiny gems, mineral fragments, and more. This colorful and interesting slideshow displays the microphotography of Dr. Gary Greenberg.

Kevin Lange © iStockphoto.com

A petroglyph is an image that has been carved into a rock. People have been making them for thousands of years. This photographic collection of petroglyphs includes rock art from Arizona, British Columbia, California, Hawaii, India, Namibia, New Mexico, Norway, Spain, Sweden, Utah, Virgin Islands and Washington.

NOAA Image

Sea surface temperatures are important determinants of hurricane formation and the data is valuable for a variety of studies. NOAA has a website where you can view sea surface temperature maps for US Atlantic, US Pacific, North Atlantic, South Atlantic, Equatorial Pacific, Gulf of Mexico, Gulf of California, Gulf of Alaska, Great Lakes, Hawaii, Bering Strait, Global and many more.