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Weather & Climate Courses

The best free Weather & Climate courses — fact-checked, beautifully illustrated, with quizzes. Pick one and start right now. Browse 358 free, fact-checked courses — each with narration, real images and a knowledge check.

Picture yourself on a woodland path at dawn: nearby branches remain sharp, but the trail fades into a pale wall and each breath feels cool and damp. You are inside a cloud whose base reaches the ground; meteorologists call it fog when suspe

How does the immune system remember a virus?

Trace how antigen-specific cells and antibodies preserve a trained response, then see why boosters can make recall faster without guaranteeing perfect protection.

How do coastal wetlands recover from storms?

Follow surge, waves, erosion, sediment, surviving roots, and restoration to see why one storm can damage a wetland and also reshape its path to recovery.

Blue Carbon: How Coastal Wetlands Store Carbon

Follow carbon through marshes, mangroves, and seagrass—from plant growth and tidal export to buried soil, disturbance, restoration, and honest climate accounting.

Scott's Last Expedition: Reading the Final Diary

Read Scott's final expedition through its route, transport, weather, last diary pages, and the scientific records that outlasted the catastrophe.

The James Caird: A Boat, a Storm, and a Rescue

Follow six sailors from a stranded Antarctic island across 800 miles of ocean, then over South Georgia, to bring help to the people still waiting behind.

How Woodpeckers Strike Without a Soft Helmet

See how a woodpecker's posture, beak, skull, hyoid apparatus, and compact brain work together during repeated impacts.

The Hidden Engineering of a Road’s Slope

Every road is quietly tilted to move rain off the wheel path. Trace camber from the crown to the drain and see why a curve has to break its own rule.

How Wildfires Make Their Own Weather

Follow heat from a wildfire into rising air, fire clouds, storm winds, lightning, and smoke that can reach the stratosphere.

Why Jupiter's Great Red Spot Is Shrinking

Track the Great Red Spot from a planet-sized storm to a shrinking, still-mysterious vortex—and see why scientists are testing the role of Jupiter's jet streams.

Voyager's Golden Record: A Portrait of Earth

Open the Voyager Golden Record and find a carefully argued portrait of Earth: its science, bodies, voices, weather, music, and hopes.

How Solar Storms Reach Earth

Trace a solar flare, coronal mass ejection, and geomagnetic storm from twisted magnetic fields to auroras, telegraph surges, and modern technology.

British Columbia: Mountains, Water, and Coast

Read British Columbia through its mountain ranges, rain shadows, islands and the sediment-laying Fraser delta.

The Alborz Mountains: One Wall, Two Climates

See how the Alborz Mountains divide Caspian forests from Iran’s dry interior, shape Tehran’s water, and record an active continental collision.

The Cascade Range: Fire, Ice, and Water

Read the Cascade Range as a living system of subduction, volcanoes, glaciers, rivers, and weather.

The Paris Agreement

At COP21 in 2015, countries build a near-universal climate treaty around five-year national plans, transparency, and a repeating global stocktake — not one identical target for all.

Reading Climate Graphs

Learn to read temperature and precipitation axes, find wet and dry seasons, calculate annual temperature range, and write a bounded climate-graph interpretation.

Temperature as a line, rain as bars, months across the bottom. Learn to read climographs, climate normals, and the jump from pattern to Köppen regime.

Jelly-Fish, Star-Fish, and Sea-Urchins

Snip the rim of a Sarsia and the bell goes still — while the thread you cut off keeps beating. An 1885 seaside physiology of animals with no brain.

How Cloud Computing Works

Learn what the cloud means, how pooled resources scale, how IaaS, PaaS, and SaaS differ, and why data centers still matter.

The samovar has been boiling for two hours, and the doctor will not drink the tea. You are on a cloudy afternoon at a Russian country estate: three o'clock, a guitar on a bench, an old nurse knitting, a hammock by the table.

Lincoln's First Inaugural Address

See how Lincoln paired a constitutional defense of the Union with promises of restraint as the Civil War approached.

How does a railway network work?

At a junction, one train may continue straight while another takes a branch. A railway network makes that choice safely by combining track, points, train detection, and signals.

How to Read a Topographic Map

Read contour lines to estimate elevation, judge slope, trace drainage, and turn a map into a side-on view of the land.

Fragments of Earth Lore

James Geikie’s 1893 essays teach you to read hills, valleys, erratics, and missing rock layers as a damaged archive—and to keep his field method while updating his climate engines.

How Stevenson Made Edinburgh a Character

Read Edinburgh: Picturesque Notes as a walk through architecture, memory, weather, and social contrast.

The Story of Rome

A stone arch dumps Rome’s wastewater into the Tiber. Gilman prints that drain in 1885 — then tells you the kings around it must be told even after they have been disproved as fact.

The Land of Little Rain

Read Mary Austin's desert essays as a study of water, adaptation, and the limits of a human observer's gaze.

The Hound of the Baskervilles

Follow Holmes and Watson across Dartmoor as a family legend, a hidden inheritance, and a trained hound turn fear into a murder method.

Virgil begins not with Rome but with a refugee at sea: Aeneas has escaped Troy carrying his father, his household gods, and a remnant of his people, while Juno sends a storm because fate has promised that Trojan descendants will threaten he

Nerves and Common Sense

Read Annie Payson Call?s 1909 guide as a historical study of nervous strain, attention, effort, and the limits of self-help.

How can communities adapt to coastal erosion?

Stand on the filled patch of North Carolina Highway 12 above Rodanthe. After Hurricane Irene, USGS paired photographs of the same cottage with a new inlet cutting the road — the sand had not vanished; it had moved.

How does the brain form a memory?

You walk past a bakery and the smell stops you. For a second you are ten years old, standing in a kitchen you have not entered in years. That flash is not a file pulled off a shelf. It is a cue lighting a pattern your brain built when you w

The Metamorphosis

Gregor Samsa wakes to find that he has become an enormous insect, and his first thought is not escape but whether he will miss the train. In two sentences, Kafka makes a monstrous body feel less urgent than the work and family debt that hav

Heart of Darkness

The novella opens on the Nellie, anchored on the Thames as daylight drains away, while Marlow begins a story about his journey into the Congo. When he calls the Thames “one of the dark places of the earth,” the familiar map tilts: darkness

Gulliver of Mars

Gulliver Jones is a hungry, indebted navy lieutenant in a rainy New York slum, thinking about steak, tomatoes, and the promotion he believes he deserves—not Mars. When a dead stranger's carpet answers his frustrated wish, the novel launches

Gulliver's Travels

Before the islands, the book gives us a publisher, a supposedly real captain, and a letter complaining that editors have altered his account. Lemuel Gulliver presents himself as a practical man: trained in navigation and medicine, attentive

A wetland can be wet and water-stressed

You are standing beside a tidal marsh: water fills the channels, yet roots may still be in drought stress. Salty water is harder for roots to use, and evaporation can concentrate salts between rain and tides. Surface water is only a clue; t

Antlions, trapdoor spiders and the traps underfoot

An antlion pit is not a hole. It is a slope of dry sand held just short of collapse, and the larva at the bottom spends its life throwing back the grains that would settle it into a safer angle. A trapdoor spider does the same trick with di

Where the Panama Canal gets the water to lift a ship

There is no pump anywhere in the system. A rain-fed lake 26 metres up does all the lifting, through eighteen-foot tunnels cast inside the lock walls and a hundred holes in each chamber floor — and a 40-horsepower motor is enough to swing an

Why you overestimate how bad it will feel

Your weather app says 40% chance of rain and you take an umbrella without thinking twice. The forecast that arrived in your chest this morning came with no number, no issue time and no plan to update — and it is wrong in a direction researc

Why the sky is not violet

Look up on a clear afternoon. The whole dome seems to offer one enormous color — blue — yet a prism would spread the sunlight that made it into a rainbow, red through violet. Violet has the shortest visible wavelength; red has the longest.

How a canal boat became a scale

Follow a loaded canal boat into a weighlock, where buoyancy, a drained cradle, and a clerk's rod turn a waterline into a cargo toll.

Concrete that heals its own cracks

Stand at the edge of a worn concrete road after rain and look for the thin dark lines water has just made visible. A crack is more than a blemish: it can become a route for water, chlorides, and carbon dioxide toward steel reinforcement. Co

Francis Drake's voyage around the world, 1577-1580

Five ships left Plymouth in 1577 and one came back. Follow the voyage on its own record: the friend Drake beheaded and the official account that will not print his name, fifty-two days of storm, a Spanish treasure ship with two rude nicknam

Why the second bow in a double rainbow is reversed

The faint outer arc is not a second shower or a reflection off a cloud. It comes out of the same raindrops as the bright one, from light that bounced twice instead of once — and that single extra bounce costs it more than half its brightnes

The Carrington Event: the solar storm that shocked the telegraphs

In September 1859 the Sun threw a cloud of plasma at Earth, the aurora reached Panama, and telegraph operators found their keys working with the batteries disconnected. What happened, what Carrington himself refused to conclude, and why pow

How a leaking tank flooded Boston

At 12:30 on Boston's waterfront, a 50-foot tank let go. A roar like a train rolled over the North End, then 2.3 million gallons of molasses became a wave.

The Golden Hind and Drake's circumnavigation

Stand on a Plymouth quay in November 1577: five small ships are about to try the Channel, and a storm will shove them back. When they finally slip out in December, most of the crew have been told they are bound for the Mediterranean — not a

How does dew form on grass

At 5 a.m. your feet are wet, though no rain fell. Each blade cooled in the dark until water vapor from the air next to it turned into liquid droplets.

Why is the deep ocean cold everywhere

You look down on the Labrador Sea: ice, cloud streets, and water giving its heat to the wind. Cold, salty surface water can sink here — so the abyss under a tropical sun is not a local refrigerator.

Four treaties people call one

You walk into the Chiesa Maggiore at Castiglione delle Stiviere on the evening of 24 June 1859. A Genevan banker with no medical training is already there, giving water to men whose own army has not come back for them.

Eastman's portraits of the chiefs

You open a 1918 book from Little, Brown in Boston. The title page names Charles A. Eastman, and then, in parentheses, Ohiyesa. Fifteen chapter titles follow: Red Cloud. Spotted Tail. Little Crow. Crazy Horse. Sitting Bull. Chief Joseph. Thi

Why do we see faces in clouds and outlets?

Explain face pareidolia as the interaction of visual evidence, face-sensitive processing, prediction, and attention.

Why Does Your Mind Wander?

Learn how internally directed thought, attention control, memory, goals, and brain networks interact when your mind leaves the task in front of you.

Why Does Rejection Hurt So Much?

Rejection can feel bodily because social connection is a basic human need. Trace belonging, threat, stress, and the brain systems that partly overlap with pain.

Why Do We Sneeze?

Follow irritation from the nose through the trigeminal nerve and brainstem to the coordinated, explosive reflex that helps clear the airway.

How a storm drain prevents flooding

To understand inlets, pipes, runoff, capacity, and overflow paths.

The Epic of Gilgamesh Explained

Look at Uruk's walls: an extraordinary king has turned power into oppression. The people appeal to the gods, who answer with Enkidu: a rival whose friendship makes the epic ask what strength does to a city when no institution can restrain i

Rwanda's Post-Genocide Climate Resilience Explained

Look at a man walking a Kigali street under an umbrella while the road turns to water under his feet. You can feel the problem before you can name the policy: this is a steep country, and a season of rain can undo a year of rebuilding. The

Why do peacocks have such big tails?

Picture a male Indian peafowl in a shaft of sunlight as he lifts a brown tail and an enormous green fan rises behind it, turning a living bird into a wall of shimmering eyespots. It looks like a giant tail—but the ornament is a train of elo

How does fog form?

You have seen a cloud without looking up: fog is a suspension of water droplets at the Earth's surface. The droplets appear when moist air reaches saturation and water vapor condenses.

How does soil form from rock?

Look at a handful of soil: it records rock, water, and life working together. Climate, organisms, relief, and time turn that material into a living profile, sometimes far from the rock where its minerals first formed.

How the Brain Predicts the Body

Learn how interoception, prediction, and feedback shape body regulation and emotion—without turning one sensation into a diagnosis.

How does air traffic control work?

Look down on a busy airport: one jet rolls, another lands, and more sit above the cloud. Nobody is improvising.

How does nitrogen cycle through an ecosystem?

You are standing in a clover field after rain. The air is mostly nitrogen, yet the plants at your feet cannot drink it.

How does the jet stream steer weather?

Look up from the tarmac. Five miles up, a river of wind you cannot see is deciding whether tomorrow's rain misses you or stays.

How does a Venus flytrap count?

Look inside an open trap. Three stiff hairs decide whether a raindrop is weather or a meal, by counting electrical spikes instead of thinking.

How does sand end up on a beach?

Stand at the wet line and pick up a handful. Those grains are wreckage — from rock, shell, or an older dune — that waves are still sorting.

How do coastal wetlands move sediment?

Trace river flow, tides, grains, roots, reefs, restoration, and measurement through the movement of sediment in coastal wetlands.

How do coastal wetlands buffer storm surge?

Trace waves, surge, roots, sediment, channels, living shorelines, monitoring, and recovery through how coastal wetlands buffer storm impacts.

How do coastal wetlands shape estuaries?

Trace tides, sediment, water chemistry, habitat, storms, and restoration through how coastal wetlands shape estuaries.

Fresh and salt water

How do coastal wetlands balance fresh and salt water?

Trace rivers, tides, salinity gradients, groundwater, wetland life, drought, storms, restoration, and monitoring through fresh and salt water balance.

Storm resilience

How do coastal wetlands weather storms and recover?

Trace wind, surge, waves, vegetation, sediment, erosion, recovery, monitoring, and adaptive management through how coastal wetlands weather storms.

Watershed connections

How do coastal wetlands connect watersheds and estuaries?

Trace rainfall, rivers, tides, sediment, nutrients, habitat networks, restoration, and evidence through how coastal wetlands connect watersheds and estuaries.

Wetland adaptation

How do coastal wetlands adapt to climate change?

Trace sea-level rise, sediment, migration, habitat connections, restoration, and monitoring through how coastal wetlands adapt to climate change.

Eroding marsh edge

How do coastal wetlands erode and rebuild?

Trace erosion, deposition, roots, storms, shoreline change, sediment budgets, monitoring, and restoration through how coastal wetlands erode and rebuild.

How do coastal wetlands hold and release water?

Follow rain, tides, groundwater, soil pores, channels, vegetation, storm surge, restoration, and measurement through coastal-wetland hydrology.

Storm protection

How do coastal wetlands reduce storm damage?

Trace waves, roots, sediment, elevation, connected habitats, living shorelines, and evidence through coastal wetland storm protection.

Storm resilience

How do coastal wetlands respond to storms?

Trace wind, waves, surge, sediment, vegetation, recovery, restoration, and monitoring through coastal-wetland storm response.

Wetland recovery

How do coastal wetlands recover after storms?

Follow sediment, water, roots, wildlife, restoration, and monitoring through the uneven recovery of coastal wetlands after storms.

Coastal communities

How do coastal wetlands support communities?

Trace fisheries, livelihoods, recreation, storm protection, fair access, restoration, and evidence through the human benefits of coastal wetlands.

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Nixtamalisation: the corn chemistry that built Mesoamerica

Raw maize will not feed a city. Alkali, a night in the pot, and the grain becomes food.

Rice around the world: one grain, a hundred cuisines

Half the planet eats it every day. How one grass domesticated beside a Chinese river became risotto, jollof, biryani, paella and sushi.

Cheese: milk, microbes and time

Milk is mostly water. Cheese is what is left when you break its protein cage, drain it, salt it and wait for the microbes to work.

How does a train stay on the track

Discover how tapered wheels, flanges, bogies, rails, curves, switches, braking, and inspection keep trains guided safely.

Monsoons and the rains that feed a subcontinent

Follow the seasonal wind reversal from ocean moisture and mountain lifting to the rains, rivers, farms, floods, and droughts of South Asia.

How stadiums are designed for 80,000 people

See how a stadium turns 80,000 individual seats into one safe, viewable, weather-aware building through sightlines, circulation, structure, services, and event-day operations.

The Sun: the engine of the solar system

Follow the Sun from hydrogen fusion and layered energy transport to magnetic activity, solar wind, auroras, and the space weather that reaches Earth.

Glaciers and the landscapes they leave behind

Follow moving ice as it scrapes bedrock, carves valleys and cirques, deposits moraines and eskers, and leaves a readable archive of past climate and landscape change.

How do birds know where to fly

Learn how migrating birds combine an inherited direction, the Sun and stars, Earth's magnetic field, landmarks, smells, weather, and memory to find routes and stopover places.

The Amazon rainforest and the river that feeds it

Follow water from the Andes to the Atlantic and see how tributaries, flood pulses, transpiration, clouds, wildlife, and people connect the Amazon rainforest to its river.

How do rainbows form

Follow sunlight through water droplets to see how refraction, reflection, dispersion, and your viewing angle turn rain into a bow of color.

Antarctica: the continent under two miles of ice

Explore the rock, flowing ice, hidden lakes, ocean edges, climate archive, wildlife, science, and treaty system beneath Antarctica’s white surface.

How dolphins sleep with half a brain

Follow the breathing problem, alternating brain states, one-eye clue, and evidence behind the dolphin's unusual way of sleeping.

How quicksand actually behaves

Understand quicksand as loose saturated sediment whose grain contacts weaken when pore-water pressure rises, then connect sinking myths, rescue risks, tides, and earthquake liquefaction to the same physical stress balance.

Why does it snow

Follow snow from moisture and ice nuclei in clouds to crystal growth, atmospheric temperature layers, and the snow that reaches the ground.

How a hot air balloon flies

Explain how a burner heats air, density differences create buoyancy, the pilot controls altitude, and wind and weather shape a hot air balloon's route.

Why the sea is salty

Follow salt from weathered rock and hydrothermal vents into a moving ocean shaped by evaporation, ice and circulation.

How does a hot air balloon steer

Learn how burners, vents, altitude, wind layers, weather reading, and landing choices let a hot-air balloon find its route.

Tornadoes and the physics of a spinning storm

Follow buoyant air, wind shear, mesocyclones, pressure, radar, and debris surveys to see how a spinning storm becomes a tornado.

How do clouds stay up

Understand how moist air rises and cools, how droplets form on tiny particles, and why small cloud particles can stay suspended until they grow into precipitation.

How lightning forms and strikes

Follow charge separation inside thunderstorms, the hidden leaders and brilliant return strokes of a flash, the many forms lightning can take, and why current spreads beyond the visible bolt.

Why leaves change colour in autumn

Follow autumn leaf colour from the green work of chlorophyll through hidden yellow pigments, newly made reds, weather, daylight, leaf drop, and the open scientific question of why some trees turn brilliantly red.

Hurricanes: how a storm becomes a monster

Follow a hurricane from tropical disturbance and warm-water fuel through condensation, eyewall structure, intensification, landfall, surge, and rain.

Why do peacocks have such tails

Unpack the peacock train from iridescent feather structure and courtship display to sexual selection and seasonal molt.

How a river carves a canyon

Follow gradient, floods, sediment, weathering, and tributaries as a river cuts down and widens a canyon.

Jupiter, the giant that shields the Earth

Explore Jupiter's scale, storms, magnetic field, moons, asteroid belt, Trojan asteroids, and the careful meaning of its shielding role.

How avalanches start

See how layered snow, weak bonds, triggers, weather, and terrain combine to start an avalanche.

How stars are born, live and die

Follow a star from a collapsing cloud through hydrogen fusion, red-giant swelling, white-dwarf cooling, or supernova death.

Machu Picchu, the city in the clouds

Explore how Inca builders integrated terraces, water, stone, ritual, and mountain ecology into Machu Picchu—and why conserving the whole landscape matters.

How do astronauts train underwater

Understand how neutral buoyancy, spacesuits, handrails, mockups, divers, and repeated rehearsals prepare astronauts for spacewalks.

How roller coasters keep you in the seat

Understand how gravity, curvature, captured wheels, restraints, brakes, and inspections keep coaster riders aligned and secure.

Bullet trains: how Japan made 200mph routine

Understand how dedicated track, electric trainsets, automatic control, earthquake protection, and disciplined operations make high-speed travel routine.

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Why does trauma change the brain?

Trace high-stakes threat learning through memory, stress regulation, distributed brain networks, imaging limits, ongoing danger, and recovery plasticity.

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Why do we eat more than we need?

Follow appetite across gut–brain timing, reward learning, portions, energy density, sleep, stress, medical inputs, and stigma-free system redesign.

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Why do we sweat when nervous?

Follow nervous sweating from anticipatory brain networks through sympathetic cholinergic nerves and eccrine glands, then learn what skin conductance can—and cannot—reveal.

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Why do we get headaches?

Trace head pain from sensitive structures through shared pathways, then distinguish migraine, tension-type, cluster, and secondary headache logic.

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Why do we sigh?

Follow one augmented breath through lung recruitment, respiratory resetting, brainstem peptides, mental load, and the transition called relief.

How Freight Trains Work

Follow locomotives, freight cars, wheelsets, couplers, air brakes, train handling, yards, intermodal movement, and end-of-train safety through a freight journey.

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