amphipod: An order of water-dwelling crustaceans related to lobsters, shrimp, and krill. Amphipods vaguely resemble shrimp. Most types are less than one centimeter (0.4 inch) long.
Antarctica: A continent mostly covered in ice, which sits in the southernmost part of the world.
aquatic: An adjective that refers to water.
artery: Part of the body’s circulation system. There are several. Each is a major tube running between the heart and blood vessels that will move blood to all parts of the body.
biologist: A scientist involved in the study of living things.
borehole: A hole drilled deep into the ground to extract a core of soil, ice or rock. Sometimes the hole is drilled with the goal of getting to gas or pools of liquid, such as water or crude oil.
colleague: Someone who works with another; a co-worker or team member.
core: Something — usually round-shaped — in the center of an object.
cosmic: An adjective that refers to the cosmos — the universe and everything within it.
crest: The highest part of a hill, a mountain or a swell of water.
downstream: Further on in the direction in which a stream is flowing or the path at which stream water will flow in its trek to towards the oceans.
expedition: A journey (usually relatively long or over a great distance) that a group of people take for some defined purpose, such as to map a region’s plant life or to study the local microclimate.
glacier: A slow-moving river of ice hundreds or thousands of meters deep. Glaciers are found in mountain valleys and also form parts of ice sheets.
graduate student: Someone working toward an advanced degree by taking classes and performing research. This work is done after the student has already graduated from college (usually with a four-year degree).
ice age: Earth has experienced at least five major ice ages, which are prolonged periods of unusually cold weather experienced by much of the planet. During that time, which can last hundreds to thousands of years, glaciers and ice…
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