The Volcano Adventure Guide: Excellent information and background for anyone wishing to visit active volcanoes safely and enjoyably. The book presents guidelines to visiting 42 different volcanoes around the world.
Igneous or magmatic rocks: The most primitive rock type forms when magma (molten rock) solidifies - either inside the earth (plutonic rocks) or during volcanic eruptions (volcanic rocks). A short overview.
Largest 20 earthquakes past 24 hrs: Our continuously updated worldwide map and list of the most recent largest earthquakes in the world during the past 24 hours.
You can also find top 20 lists for given past days / months / years from the archive.
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