ClueSpark field guide

Explore the evidence. Find your next case.

An expanding archive of science, math, and history investigations. Browse the subjects, then open a downloadable case file when it is ready for your verdict.

Archive protocol

Topic cards map the full investigation archive. “In the archive” means a subject is being researched—not yet a finished download.

Next case

Planetary evidence

Earth & Oceans

Trace the forces that shape water, land, and the living worlds caught between them.

Oceans & primordial seasTides & currentsDeep sea zonesHydrothermal ventsCoral reefs & bioluminescenceRivers, wetlands & watershedsErosion & sedimentVolcanoes & earthquakesTectonics & mountainsDeserts & forests
Research in progress
In the archive

Atmospheric evidence

Weather & Climate

Read the atmosphere like a case report: pressure, heat, motion, and change over time.

Atmosphere & air pressureWinds & ozoneGreenhouse gasesWeather systemsHurricanes & tornadoesJet streamsClimate changeGlaciers & ice ages
Research in progress
In the archive

Cosmic evidence

Space & Cosmos

Follow light, gravity, and time across the universe—from nearby worlds to its first moments.

Planets, moons & cometsStars & supernovaeBlack holesGalaxies & dark matterGravity & relativityTelescopes & rocketsThe Big Bang
Research in progress
In the archive

Living evidence

Life & Mind

Investigate the systems that build bodies, behavior, memory, culture, and everyday life.

Evolution & geneticsCells & DNAMicrobiology & immunityBrains & memoryPsychology & sleepLanguage & cultureFood science
Research in progress
In the archive

Pattern evidence

Math Lab

Use mathematical tools to test theories, uncover patterns, and make a defensible case.

Number systems & arithmeticAlgebra & functionsGeometry & trigonometryCalculus & changeStatistics & probabilityCombinatoricsLinear & discrete mathLogic & algorithms
Research in progress
Open now

Historical evidence

Deep Time & History

Compare sources, artifacts, fossils, and records to ask how we know what we think we know.

Indigenous histories & oral traditionsExploration & cultural exchangeEmpires & industrializationSlavery, resistance & civil rightsWorld warsMythology & art historyDinosaurs & fossilsPangaea & mass extinctionsAncient ecosystemsDating methods & evidence

Available case files

Open evidence you can actually investigate.

These live case files come directly from the ClueSpark catalog. More subjects will move from the archive when their investigations are complete.

View all case files