A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

× 67
Paleoclimatology concerns climate and climate variability before the onset of instrumented measurements.
× 66
taken from remote locations / are not taken in situ.
× 63
concerns the landforms and exogenous processes of the surface of the Earth or other solid surface planets.
× 62
Questions regarding large land masses that reach high above the surrounding terrain, usually forming a peak.
× 61
the introduction of particulates, biological molecules, or other harmful materials into Earth's atmosphere, causing diseases, allergies, death to humans, damage to other living organi…
× 60
Questions about freely available data.
× 58
the study of terms and their use. Terms are words and compound words that in specific contexts are given specific meanings, meanings that may deviate from the meaning the same words hav…
× 58
part of your high school or college/university homework, please use this tag. Do not use this as the only tag on a question. It signifies that instead of a direct answer, care shou…
× 52
In contrast to the short-term variable weather, climate describes the mean conditions of atmosphere. Thus it is the statistic of weather (mean values, extrema, etc.). Often a 30-year period is conside…
× 51
the scientific study of past life. Questions about the biological aspect of paleontology (such as taxonomy and anatomy) are off-topic here and should be asked on b…
× 42
the application of field geology, petrology, geochemistry, geochronology, geophysics, remote-sensing, modeling and multidisciplinary studies to explains the evolution, structure, and defo…
× 42
For questions about the Earth's core. The center of the Earth is primarily iron-nickel.
× 41
A solid material whose constituents, such as atoms, molecules or ions, are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.
× 41
Observations recorded on earth.
× 40
the periodic fall and rise of sea-level due to gravitational forces of the moon, sun or earth-rotation. When asking questions specifically about tides, use this tag and also include the [o…
× 40
Questions that concern the health and safety of people, the environment, and ecosystems. Topics can include natural resource and energy efficiency, environmental protection and/or remediation, and env…
× 39
the application of mathematics, physics, chemistry, geology, and computer science in understanding how mantle convection leads to plate tectonics.
× 39
Questions regarding the magnetic field emanating from Earth's interior.