In celebration of Futurama returning with a fresh season, we’ve rounded up 10 clever scientific references that pepper the series. The show’s writers boast PhDs in physics, mathematics, computer science, and other brain‑tasting fields, sprinkling jokes that only those steeped in the subject matter truly appreciate. With this guide, you’ll catch the hidden science, learn a bit, and enjoy a chuckle.
10. The Salmon Life Cycle
Season 7’s episode “Naturama” (Episode 13) treats viewers to a three‑part nature documentary titled “Mutuals of Omicron’s Wild Universe.” While Futurama usually dives into mind‑bending quantum quirks, this installment pauses to showcase ecological wonders such as the salmon life cycle, tortoise courtship, and elephant‑seal social hierarchies. Though less cerebral than many other episodes, “Naturama” would have saved me from flunking my sixth‑grade biology quiz.
“Part 1: The Salmon” opens on a chilly freshwater stream where salmon eggs hatch amid gravel. The animation introduces the first two developmental stages: the alevin—tiny fish still attached to a yolk sac—and, after consuming the yolk, the fry, which, like Fry the character, embarks on a journey from river to sea.
Soon Fry meets a gorgeous fish named Leela, who promises to pair up when they reach breeding age. After a series of underwater dates, Fry, Leela, and their generation mature, begin their upstream trek, and discover—much to their dismay—that they hail from neighboring streams. A heroic bear intervenes, reuniting the pair. Leela spawns her eggs, Fry fertilizes them, and the two meet a tragic end together. While real salmon don’t fall in love or arrange cute dates, Futurama’s portrayal captures the essential steps of the salmon life cycle with entertaining flair.
9. Delta Brain Waves
In the classic “Roswell That End’s Well,” the crew travels back to 1947 New Mexico, and a series of ill‑judged decisions leads Fry to become his own grandfather. This bizarre lineage wipes out his delta brain‑wave pattern, granting him a unique neural signature that makes him immune to several mind‑hacking threats.
For instance, the “Into the Wild Green Yonder” episode introduces the Dark Ones—a telepathic species bent on universal domination. Because Fry lacks delta waves, the Dark Ones can’t pry into his thoughts, allowing him to keep his secrets and save the cosmos undetected.
Initially, I assumed delta brain‑waves were a Futurama invention, but they’re genuinely the slowest human brainwave, linked to deep sleep and restorative relaxation. Delta waves influence subconscious processing, making them attractive targets for brain‑hacking. Moreover, research hints at a negative correlation between delta activity and spiritual intelligence, suggesting Fry’s unusual brain pattern could make him especially adept at resisting the series’ peculiar dark forces.
8. BASIC
BASIC—short for Beginner’s All‑purpose Symbolic Instruction Code—is a programming language crafted in 1964 by John G. Kemeny and Thomas E. Kurtz to teach novices the fundamentals of coding. In the episode “I, Robot,” the language’s longevity is highlighted when Fry, moving in with Bender, spots a sign that reads “10 HOME, 20 SWEET, 30 GO TO 10,” a classic BASIC loop that translates to “Home Sweet Home” for those unfamiliar with the syntax.
7. The Birth Of Our Universe
Season 6’s “The Late Phillip J Fry” offers a dazzling tour of cosmology. While rushing to meet Leela for dinner, Fry convinces Professor Farnsworth to test a forward‑time device. After a mishap sends them careening through spacetime, they end up in the year 10 000 AD. Continuing forward, they watch the universe wind down to a cold void, only to witness a cataclysmic explosion that Farnsworth identifies as the Big Bang.
The sequence beautifully visualizes the birth of the cosmos: gravity pulls matter into the first stars and galaxies, swirling dust and gas coalesce into Earth, and a colossal impact—known as the moon‑forming impact—splits a proto‑Earth, creating our lunar companion. The crew observes early evolution, the arrival of the first colonizers, and major milestones in natural and human history before finally returning home.
6. The Problem Of Relativity
Futurama’s intergalactic shenanigans routinely feature faster‑than‑light travel, a plot device that bends Einstein’s special relativity. Rather than an oversight, writers David Cohen and Matt Groening deliberately chose entertainment over strict physics, as Cohen explained in an American Physical Society interview: they aim to amuse scientists even if the science is “bogus.”
This self‑awareness appears in “A Clone of My Own,” where Professor Farnsworth boasts of “dark‑matter engines… traveling between galaxies in mere hours.” When his clone Cubert points out the impossibility of surpassing light speed, Farnsworth replies that “scientists increased the speed of light in 2208.” By simply redefining the constant c, the show sidesteps the infinite‑mass problem of approaching light speed, allowing characters to zip across space without violating physics.
5. Heisenberg’s Uncertainty Principle
In “Luck of the Fryrish” (Season 3, Episode 4), Professor Farnsworth laments a loss at the racetrack, invoking the observer effect. Werner Heisenberg’s 1927 principle states that one cannot simultaneously know a particle’s exact position and momentum. Because particles exhibit wave‑like behavior, measuring one property inevitably disturbs the other.
Farnsworth’s bet on a dead‑heat between two horses ends with judges using an electron microscope to declare a winner. He protests, “No fair! You changed the outcome by measuring it,” highlighting that the act of measurement collapses the wavefunction, altering the system—a direct nod to the Uncertainty Principle’s core insight.
4. Schrodinger’s Cat
Erwin Schrödinger’s famous thought experiment from 1935 illustrates superposition: a cat sealed in a box with a 50/50 chance of lethal poison remains simultaneously alive and dead until observed. Futurama references this in “Law and Oracle” (Season 6, Episode 16), where a frantic Schrödinger speeds away from Officer Fry and partner URL.
When captured, Schrödinger explains his mysterious box contains “a cat, some poison, und a cesium atom.” Fry demands to know the cat’s fate; Schrödinger replies that it exists in a superposition of both states until opened, collapsing the wavefunction. Fry opens the box, only to be assaulted by a very much alive cat, confirming the superposition resolved into life.
3. Möbius Strip
Recall the high‑school activity of giving a strip of paper a half‑twist and taping the ends together? That creates a Möbius strip—a non‑orientable surface with only one side. Futurama toys with this concept in the episode “Möbius Dick” (6ACV15), where the crew encounters a four‑dimensional space whale that Leela dubs Möbius Dick—a clever pun on Herman Melville’s novel.
The strip reappears in “2‑D Blacktop” (7ACV15), where Leela and Professor Farnsworth race along a Möbius‑shaped dragstrip. Their vehicles loop around both sides of the half‑twist, collide at relativistic speeds, and get thrust into a two‑dimensional universe—only to return safely to three dimensions later.
2. The Banach‑Tarski Paradox
“Benderama” showcases Professor Farnsworth’s “Banach‑Tarski Dupla‑Shrinker,” a nod to the Banach‑Tarski paradox, which proves that a solid sphere can be dissected into a finite number of pieces and reassembled into two identical copies of the original—essentially infinite cloning. While the mathematics involve manipulating countably and uncountably infinite sets, the episode sidesteps deep proofs.
Farnsworth, an aging inventor, creates a device to shrink his sweaters. Bender, refusing to fold them, implants the machine in his chest, spawning two 60%‑sized Bender clones. Each clone repeats the process, leading to an infinite cascade of Benders that eventually unite to defeat a giant, forming a massive composite Bender. Though the show bends the paradox, it cleverly references the mind‑boggling theorem.
1. The Futurama Theorem
Ken Keeler, a Harvard‑trained applied mathematician, authored the episode “The Prisoner of Benda” (7ACV10) and created the only mathematical proof written exclusively for television. The Futurama Theorem states that any permutation of n objects can be restored using a sequence of non‑repeating swaps, requiring no more than two extra objects.
In the episode, Farnsworth and Amy use a “mind‑switcher” that prevents the same pair from swapping twice. Chaos ensues as multiple characters, even wash buckets, become entangled. By introducing two helpers—Bubblegum and Sweet Clyde—the crew systematically swaps minds back to their rightful bodies, following a step‑by‑step algorithm that demonstrates the theorem’s power.
Group 1 proceeds: B(P) ↔ SC(SC), BG(BG) ↔ P(L), and so on, ultimately restoring everyone. Group 2 uses the same helpers to resolve the Fry‑Zoidberg swap. The theorem’s elegance shines as the episode wraps up with every character back in place, proving that even the most tangled mind‑mix‑ups have a mathematical solution.