STEMforAdults.com

Finally, science
for the curious adult.

Short, clear lessons — one concept at a time. No tests, no grades, just understanding.

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⚡ Physics For Adults

The laws
of everything.

From Newton's three laws to quantum mechanics. 30 modules that take you from forces you can see to the particles that make up reality.

Start Free — Module 1 →
30
Modules
8
Deep Dives
150
Concepts
36
Hall of Fame
30 Modules — hover to pause
Motion & KinematicsNewton's LawsForces & Free Body DiagramsWork, Energy & PowerMomentum & CollisionsRotational MotionGravityOrbital MechanicsTides & Gravitational EffectsOscillations & SHMWavesSoundTemperature & HeatLaws of ThermodynamicsHeat EnginesElectric Charge & FieldsElectric Potential & CircuitsMagnetismElectromagnetic InductionMaxwell's Equations & LightGeometric OpticsWave OpticsSpecial RelativityGeneral RelativityQuantum MechanicsAtomic PhysicsNuclear PhysicsParticle PhysicsCondensed MatterCosmology & the Big BangMotion & KinematicsNewton's LawsForces & Free Body DiagramsWork, Energy & PowerMomentum & CollisionsRotational MotionGravityOrbital MechanicsTides & Gravitational EffectsOscillations & SHMWavesSoundTemperature & HeatLaws of ThermodynamicsHeat EnginesElectric Charge & FieldsElectric Potential & CircuitsMagnetismElectromagnetic InductionMaxwell's Equations & LightGeometric OpticsWave OpticsSpecial RelativityGeneral RelativityQuantum MechanicsAtomic PhysicsNuclear PhysicsParticle PhysicsCondensed MatterCosmology & the Big Bang
Deep Dives
  • Why You Can't Travel Faster Than Light
  • The Measurement Problem
  • Maxwell's Demon and the Physics of Information
  • The Four Fundamental Forces
  • Symmetry: the Hidden Engine of Physics
  • The Problem of Quantum Gravity
  • The Unreasonable Effectiveness of Mathematics
  • How We Know What Stars Are Made Of
Hall of Fame
NewtonEinsteinFeynmanBohrHeisenbergSchrödingerFaradayMaxwellCurieHawking
What's Included
  • 150-concept database
  • Equations & derivations
  • Hall of Fame — 36 physicists
  • 8 deep dive articles
  • Module progress tracking
∑ Mathematics For Adults

The language
of the universe.

From logic and proof to topology and the great unsolved problems. 26 modules that build real mathematical thinking from the ground up.

Coming Soon
26
Modules
8+
Deep Dives
7
Millennium Problems
10+
Hall of Fame
26 Modules — hover to pause
Logic & ProofNumber SystemsSets & FunctionsAlgebra & EquationsEuclidean GeometryCoordinate GeometryTrigonometryLimits & ContinuityDerivativesIntegrationDifferential EquationsProbabilityDistributions & Random VariablesStatistical InferenceBayesian ThinkingLinear AlgebraAbstract AlgebraNumber TheoryTopologyNon-Euclidean GeometryComplex AnalysisFourier AnalysisGraph TheoryInformation TheoryChaos & Dynamical SystemsThe Great Unsolved ProblemsLogic & ProofNumber SystemsSets & FunctionsAlgebra & EquationsEuclidean GeometryCoordinate GeometryTrigonometryLimits & ContinuityDerivativesIntegrationDifferential EquationsProbabilityDistributions & Random VariablesStatistical InferenceBayesian ThinkingLinear AlgebraAbstract AlgebraNumber TheoryTopologyNon-Euclidean GeometryComplex AnalysisFourier AnalysisGraph TheoryInformation TheoryChaos & Dynamical SystemsThe Great Unsolved Problems
Deep Dives
  • Why Euler's Identity is the Most Beautiful Equation
  • The Riemann Hypothesis
  • What Gödel's Incompleteness Theorem Actually Says
  • P vs NP — The Million Dollar Problem
  • The Strange World of Infinity
Hall of Fame
EulerGaussRiemannGödelTuringRamanujanNoetherCantorHilbertPoincaré
What's Included
  • Concepts database
  • Proof walkthroughs
  • Hall of Fame
  • Deep dive articles
  • Interactive lab (planned)
⚛️ Chemistry For Adults

Why matter
behaves the way it does.

Atoms, bonds, reactions, and the periodic table. 28 modules from atomic structure to quantum chemistry — plus all 118 elements.

Start Free — Module 1 →
28
Modules
8
Deep Dives
118
Elements
32
Hall of Fame
28 Modules — hover to pause
What is Matter?Atomic StructureThe Periodic TableChemical BondingMolecular GeometryIntermolecular ForcesChemical ReactionsStoichiometryTypes of ReactionsReaction Rates & KineticsChemical EquilibriumLe Chatelier's PrincipleStates of MatterGas LawsThermodynamicsEntropy & Gibbs Free EnergySolutions & ConcentrationAcids, Bases & pHBuffers & TitrationElectrochemistryIntro to Organic ChemistryFunctional GroupsReaction MechanismsPolymers & MaterialsNuclear ChemistryBiochemistryEnvironmental ChemistryQuantum Chemistry & SpectroscopyWhat is Matter?Atomic StructureThe Periodic TableChemical BondingMolecular GeometryIntermolecular ForcesChemical ReactionsStoichiometryTypes of ReactionsReaction Rates & KineticsChemical EquilibriumLe Chatelier's PrincipleStates of MatterGas LawsThermodynamicsEntropy & Gibbs Free EnergySolutions & ConcentrationAcids, Bases & pHBuffers & TitrationElectrochemistryIntro to Organic ChemistryFunctional GroupsReaction MechanismsPolymers & MaterialsNuclear ChemistryBiochemistryEnvironmental ChemistryQuantum Chemistry & Spectroscopy
Deep Dives
  • Why Carbon Runs the World
  • The Poisoner's Periodic Table
  • How Explosives Work
  • The Discovery of the Atom
  • Why Water is Weird
  • The Strange Science of Radiation
  • Entropy: Why Everything Falls Apart
  • Free Radicals, Antioxidants & Aging
Hall of Fame
MendeleevCurieBohrLavoisierPaulingHaberMeitnerDaltonFaradayRutherford
What's Included
  • All 118 element profiles
  • Interactive periodic table
  • Hall of Fame — 32 chemists
  • 8 deep dive articles
  • Category filters & search
⚙️ Engineering For Adults

How things
actually work.

Bridges, engines, circuits, and rockets. 24 modules from statics and materials science to aerospace engineering and the future of the field.

Start Free — Module 1 →
24
Modules
10
Deep Dives
68
Concepts
26
Hall of Fame
24 Modules — hover to pause
What Engineers DoForces & StaticsStress, Strain & MaterialsDynamics & MotionEnergy, Work & PowerFluid MechanicsBeams, Bridges & TrussesSoil Mechanics & FoundationsConcrete, Steel & ConstructionTransportation EngineeringCircuits & ElectronicsSemiconductors & TransistorsDigital Logic & ComputingMechanisms & MachinesEngines & PropulsionManufacturing & FabricationControl SystemsMaterials ScienceEnergy SystemsAerospace EngineeringBiomedical EngineeringEnvironmental EngineeringEngineering Ethics & FailureThe Future of EngineeringWhat Engineers DoForces & StaticsStress, Strain & MaterialsDynamics & MotionEnergy, Work & PowerFluid MechanicsBeams, Bridges & TrussesSoil Mechanics & FoundationsConcrete, Steel & ConstructionTransportation EngineeringCircuits & ElectronicsSemiconductors & TransistorsDigital Logic & ComputingMechanisms & MachinesEngines & PropulsionManufacturing & FabricationControl SystemsMaterials ScienceEnergy SystemsAerospace EngineeringBiomedical EngineeringEnvironmental EngineeringEngineering Ethics & FailureThe Future of Engineering
Deep Dives
  • Why the Tacoma Narrows Bridge Collapsed
  • How Jet Engines Actually Work
  • Why Roman Concrete Outlasted Everything
  • The Night Before Challenger
  • The Transistor at 3 Nanometers
  • How GPS Works (and Why Einstein Had to Be Involved)
  • The Engineering of the Human Hip
  • Why Bridges Have No Right Angles
  • How a City Gets Its Water
  • The Algorithm Running Everything (PID)
Hall of Fame
TeslaBrunelWattShannonvon BraunTuringEiffelBessemerRankineMarconi
What's Included
  • 68-concept engineering database
  • Gear & mechanism diagrams
  • Hall of Fame — 26 engineers
  • 10 deep dive articles
  • Famous failures analysis
🔭 Astronomy For Adults

The biggest picture
there is.

Solar system to the fate of the universe. 28 modules covering stellar evolution, dark matter, gravitational waves, and what comes next.

Start Free — Module 1 →
28
Modules
8
Deep Dives
31
Celestial Objects
25
Hall of Fame
28 Modules — hover to pause
The Scale of the UniverseThe SunThe Inner PlanetsThe Outer PlanetsMoons, Rings & Small BodiesFormation of the Solar SystemThe Nature of Light & SpectraStellar PropertiesHow Stars FormStellar EvolutionStellar RemnantsBlack HolesThe Milky WayTypes of GalaxiesGalaxy Formation & EvolutionDark MatterThe Big BangCosmic Expansion & Dark EnergyThe Cosmic Microwave BackgroundLarge Scale StructureThe Fate of the UniverseThe Conditions for LifeExoplanetsThe Search for Extraterrestrial IntelligenceAstrobiologyTelescopes & ObservatoriesGravitational WavesThe Future of AstronomyThe Scale of the UniverseThe SunThe Inner PlanetsThe Outer PlanetsMoons, Rings & Small BodiesFormation of the Solar SystemThe Nature of Light & SpectraStellar PropertiesHow Stars FormStellar EvolutionStellar RemnantsBlack HolesThe Milky WayTypes of GalaxiesGalaxy Formation & EvolutionDark MatterThe Big BangCosmic Expansion & Dark EnergyThe Cosmic Microwave BackgroundLarge Scale StructureThe Fate of the UniverseThe Conditions for LifeExoplanetsThe Search for Extraterrestrial IntelligenceAstrobiologyTelescopes & ObservatoriesGravitational WavesThe Future of Astronomy
Deep Dives
  • The Event Horizon
  • The Fermi Paradox
  • Dark Matter
  • The First Three Minutes
  • Cosmic Inflation
  • Gravitational Waves
  • Ocean Worlds
  • The Hubble Tension
Hall of Fame
GalileoHubbleSaganHawkingHerschelRubinChandrasekharKeplerCopernicusTycho Brahe
What's Included
  • 31 celestial object profiles
  • Canvas portraits for each object
  • Hall of Fame — 25 astronomers
  • 8 deep dive articles
  • Stars, planets, black holes & more
🧬 Biology For Adults

The science of life —
including yours.

Cells, DNA, evolution, and the nervous system. 24 modules from the first cell to CRISPR, consciousness, and the origin of life.

Start Free — Module 1 →
24
Modules
8
Deep Dives
7
Kingdoms
40
Hall of Fame
24 Modules — hover to pause
What is Life?Cell StructureThe Cell MembraneDNA & The Genetic CodeDNA Replication & Cell DivisionGenes, Proteins & Gene ExpressionMendelian GeneticsModern GeneticsNatural Selection & EvolutionThe Tree of LifeHuman EvolutionCoevolution & EcologyThe Nervous SystemThe Immune SystemThe Cardiovascular SystemMetabolism & EnergyEcosystems & Food WebsPopulation BiologyBiodiversity & ConservationClimate BiologyMicrobiology & VirusesCancer BiologyNeuroscience & ConsciousnessThe Origin & Future of LifeWhat is Life?Cell StructureThe Cell MembraneDNA & The Genetic CodeDNA Replication & Cell DivisionGenes, Proteins & Gene ExpressionMendelian GeneticsModern GeneticsNatural Selection & EvolutionThe Tree of LifeHuman EvolutionCoevolution & EcologyThe Nervous SystemThe Immune SystemThe Cardiovascular SystemMetabolism & EnergyEcosystems & Food WebsPopulation BiologyBiodiversity & ConservationClimate BiologyMicrobiology & VirusesCancer BiologyNeuroscience & ConsciousnessThe Origin & Future of Life
Deep Dives
  • How CRISPR Actually Works
  • Why We Age — all 12 hallmarks
  • The Real Story of DNA's Discovery
  • How Consciousness Might Emerge From Neurons
  • The Ecosystem Inside You
  • Cancer as Evolution
  • The Origin of Life
  • The Sixth Mass Extinction
Hall of Fame
DarwinMendelFranklinWatson & CrickPasteurMcClintockDoudnaCharpentierSalkLeeuwenhoek
What's Included
  • Force-directed Life Database
  • 7 kingdoms of life
  • Hall of Fame — 40 scientists
  • 8 deep dive articles
  • Full taxonomy explorer
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⚡ Physics
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  • 30 modules — Newton to quantum
  • Deep Dives & Research Library
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🔭 Astronomy
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  • 28 modules — cosmos to fate
  • Deep Dives & Research Library
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⚛️ Chemistry
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  • 28 modules — atoms to quantum
  • All 118 element profiles
  • All future content included
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⚙️ Engineering
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  • 24 modules — statics to aerospace
  • Deep Dives & Research Library
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🧬 Biology
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  • 24 modules — cells to CRISPR
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Coming Soon
∑ Mathematics
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  • 26 modules — logic to topology
  • Deep Dives & Research Library
  • All future content included
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This is a founding commitment of STEM For Adults. Knowledge shouldn't be rented. Pay for a subject and you own it forever — including every module we add to it. Pay $99.99 for the full platform and you own every subject we ever build. No fine print, no "introductory pricing," no future subscription tiers. Ever.