Science Atlas

How We Know What We Know
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Atlas Trails

A trail is a short, ordered route through the atlas. Each stop says why it comes next, so a journey reads as an argument rather than a list. Start one, leave, and come back: your place is kept in this browser, and you do not need an account for that.

Ten Physicists in Order of Birth Year, From Galileo's Thermoscope to Lawrence's Cyclotron

Physics advanced as much by what its instruments could register as by what its theories could explain. This path follows ten scientists in order of birth year, from the first device that showed temperature change to the...

10 stops

Science Beyond Europe and America: Ten Institutions of Asia and the Middle East, 1857 to 1939

This path follows ten institutions in India, Japan, Bangladesh and Israel where research science was organized outside Europe and North America, in the order they were founded. It begins with the University of Calcutta...

10 stops

Science Run by the State: Ten Government Agencies From 1846 to 2003

Most of the institutions on this atlas grew from a university, a society or a private gift. These ten were created or sponsored by governments to do science that nobody else would fund at scale: weather forecasts...

10 stops

Seeing the Unseen Causes of Disease: Nine Scientists From Early Microscopes to mRNA Vaccines

This path follows how scientists learned to find, name and work with agents too small to see, in rough order of the key work: lenses that first showed microbes, the proof that specific microbes cause specific diseases...

9 stops

How Science Tests a Claim: Thirteen Concepts From Observation to Replication

This trail follows one claim on its way through science. It starts with the looking that supplies the evidence, moves through the rules for deciding what counts as a testable idea, then through the designs medicine...

13 stops

Universities Where Science Was Taught: Twelve Foundings From 1209 to 1891

This path follows twelve universities in the order they were founded, from Cambridge in 1209 to Caltech in 1891. Each stop is a school where named scientists studied, taught or did their research, so the order shows the...

12 stops

Ten Naturalists Who Learned to Sort the Living World, From Aristotle to Haeckel

This path follows the long effort to put living things in order, from Aristotle grouping animals by shared traits to Haeckel naming the science of how organisms relate to their surroundings. Each stop is a naturalist...

10 stops

Nine Mathematicians in Order of Birth Year, From Leibniz in 1646 to Knuth in 1938

These nine scientists are placed in order of birth, and each stop is a mathematician whose entry records a result or a design that later work built on. The path runs from the notation of the calculus through number...

9 stops

From Culture as a Whole to Structure: Nine Scientists Who Built the Study of Human Societies

This path follows how anthropologists and linguists learned to study human societies, from a nineteenth century definition of culture, through the fieldwork that replaced armchair comparison, to the structural methods...

9 stops

How We Came to Know the Molecules of Life: Ten Scientists From X-ray Diffraction to DNA Replication

This path follows one question, how anyone could know what a molecule looks like and what it does, from the 1912 discovery that crystals diffract X-rays, through the structures of penicillin and insulin, to the...

10 stops

Ten Nobel Laureates in Order of Prize Year, From 1902 to 2013

These ten scientists each won a Nobel Prize, and the trail follows the prizes in the order they were awarded, from sugar chemistry in 1902 to the Higgs mechanism in 2013. Read in sequence, they show how a prize-winning...

10 stops

From Oxygen to the Chemical Bond: Eleven Chemists in Order of Their Key Work

This path follows chemistry from the isolation of oxygen in 1774 to the quantum account of the chemical bond in 1939. Each stop is a scientist whose work gave chemists a new way to name, count, arrange or explain...

11 stops

Eleven Earth Scientists in Order of Birth Year, Oldest First, From 1726 to 1917

These eleven scientists of the Earth, its rocks, its oceans and its weather are placed on one path in order of the birth year recorded on each entity page, the oldest first, beginning with James Hutton in 1726 and...

11 stops

Information From Sanskrit Rules to the Gene: Nine Scientists

This trail follows one idea across twenty-five centuries: that structured rules, symbols and signals can be studied, measured and built into working things. It begins with an ancient grammar that behaves like an...

9 stops

How Science Learned to Examine Its Own Methods

This path follows eight scientists who each changed what counts as good evidence, from the weighed experiments of the eighteenth century, through the design of controlled trials and the study of how materials and craft...

8 stops

Prizes and Awards: How Science Decides What Counts, 1731 to 2012

Science rewards its own, and each prize on this path shows who a field chose to honor and why. The route runs from the oldest surviving scientific award in the world to a modern prize funded by technology founders, so...

10 stops

From Anatomy to Antibiotics: Eight Scientists Who Changed How Medicine Knows Disease

This path follows four centuries of medicine by way of eight people who each replaced an inherited assumption with something that could be checked: a dissected body, a measured volume of blood, a controlled outcome, a...

8 stops

Laboratories and Institutes: Places Built for Research, 1759 to 1962

Each stop is an institution that gathered people, instruments and money in one place so that research could be sustained over years. The path runs in order of founding, from a royal garden to a national accelerator...

12 stops

Societies and Academies: How Organized Science Took Shape, 1660 to 1949

This path follows ten learned societies and academies in the order they were founded, from the Royal Society in 1660 to the Chinese Academy of Sciences in 1949. Together they show how science moved from informal...

10 stops

Eleven Women Who Changed What Science Could Show

Each of these eleven scientists, taken in order of birth from 1647 to 1920, found a new way to make evidence visible: a life cycle observed in the field, a comet found in the sky, a chart that exposed a death toll, a...

11 stops

Before the Laboratory: Nine Scientists Who Taught the World How to Know

Long before modern laboratories, scholars in Greece, China, India, Persia and the Arab world built the habits that science still runs on: observe the patient, prove the claim, measure the sky, test the drug. This path...

9 stops

How Theories Fall

Four scientific theories replaced by better ones, and what it actually took each time: new evidence, a missing mechanism finally supplied, or a rival account that still has not been settled.

7 stops

Fields Assembled, Not Founded: Earth Science and Solid-State Physics

Not every field in this atlas began with one founder and one date. This wave minted two disciplines, Earth Science and Solid-State Physics, that instead consolidated older, separately grown branches into a single named...

7 stops

The Instruments That Hit Their Limits

Four instruments this wave researched in depth, each one built to work around a hard physical limit: the telescope's aperture-resolution tradeoff, the cyclotron's relativistic ceiling and the synchrotron built to beat...

5 stops

How We Know: Five Experiments That Settled a Question

How does anyone actually know what they claim to know. This trail follows five experiments where a careful test settled a real question or overturned an assumption science had been carrying: a search for motion through...

5 stops

How Instruments Extended the Senses

Ten instruments, from a medieval disk of brass to a 27-kilometre ring under the French-Swiss border, each one letting scientists perceive something the unaided body cannot: distance, heat, pressure, scale, color...

10 stops

Credit Where Credit Was Due

Five results everyone half-remembers, and the fuller story behind who actually did the work: Scheele, Priestley and Lavoisier on oxygen; Rosalind Franklin's Photograph 51; Harvey Fletcher's uncredited share of the oil...

5 stops

Trails are curated by the atlas. Where you have got to in one is remembered by your own browser and is never sent to us.