Behold the multitude of Amazonian arthropods including spiders, scorpions, beetles, and mantids

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Watch as a shadow slowly crosses the Earth.

Encyclopædia Britannica, Inc.

This was a game-changer.

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Overview of water moving through the hydrologic cycle, or water cycle: it evaporates from Earth's surface as water vapor, which condenses in the atmosphere, forming clouds and precipitation, which falls to the land and flows through lakes, rivers, and oceans, from which water evaporates as the cycle repeats.

© American Chemical Society (A Britannica Publishing Partner)

Description of the use of spider combs.

© Open University (A Britannica Publishing Partner)

Learn how some spiders move across the surface of water.

© Open University (A Britannica Publishing Partner)

Some spiders seem to “gallop” across the surface of water.

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A black-and-yellow argiope (Argiope aurantia) capturing a grasshopper in its orb web.