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Stalactite
A stalactite or dripstone, is a type of speleothem that hangs from the ceiling or wall of limestone caves. Stalactites are formed from the deposition of calcium carbonate and other minerals, which is ... > more -
Meteorology
Meteorology is the scientific study of the atmosphere that focuses on weather processes and forecasting. Meteorological phenomena are observable weather events which illuminate and are explained by ... > more -
Sedimentary rock
Sedimentary rock is one of the three main rock groups (along with igneous and metamorphic rocks) and is formed in four main ways: by the deposition of the weathered remains of other rocks (known as ... > more -
Cretaceous
The Cretaceous period is one of the major divisions of the geologic timescale, reaching from the end of the Jurassic period, about 146 million years ago (Ma), to the beginning of the Paleocene epoch ... > more -
Global Warming
Climate
Environmental Policy
Environmental Issues
Environmental Science
Energy and the Environment
IPCC Fourth Assessment Report
The Fourth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC) is the fourth in a series of reports on climate change. Two of the three reports (Working groups I and II) have ... > more -
Global warming controversy
The global warming controversy is an ongoing dispute about the effects of humans on global climate and about what policies should be implemented to avoid possible undesirable effects of climate ... > more -
Global warming
Global warming refers to the increase in the average temperature of the Earth's near-surface air and oceans in recent decades and its projected continuation. The global average air temperature ... > more
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