Travel back to ancient Alexandria in an AMAZING adventure with Ben & Pia!

Join a patient librarian named Eratosthenes as he uses sunlight, a simple stick, and a well to measure the size of our whole planet. This WOW-Story shows how curiosity and careful notes can solve HUGE mysteries without ships or telescopes.

What makes this story special: a real science experiment from 2,200 years ago, a royal road measured by step‑counters, and a bright moment where a tiny shadow explains the shape of the world.

Historical Fun Fact: Eratosthenes estimated Earth’s circumference to about 252,000 stadia, a result surprisingly close to modern measurements when converted!

Did you know? On the summer solstice the sun can shine straight down a deep well in Syene so the water shows no shadow at noon — that clue helped measure the globe.

Ben & Pia guide the story with gentle wonder and simple steps you can try with friends: place a straight stick, mark its shadow, compare angles, and imagine the circle that connects places!

Which story do you want to hear next?

#LetsRewind #Eratosthenes #HistoryAdventure #ScienceStory #AncientEgypt #AmazingHistory

Meet Jagadish Chandra Bose — a gentle genius who made invisible waves ring a bell and taught us how plants whisper back!

This episode is a MEGA exciting adventure through smoky labs, buzzing coils, curious instruments, and gardens where leaves write their own stories. Perfect for young explorers who love science, invention, and brave choices. Hosted by Ben & Pia, who guide you through Bose’s discoveries and his kind courage.

Historical Fun Fact: Bose was one of the first scientists to demonstrate very short radio waves (microwaves) and also invented the crescograph, a device that magnified plant growth thousands of times!

Did you know? Could a crystal and a thin wire really detect invisible waves and help start the road to radio and semiconductors?

Which story do you want to hear next? Tell Ben & Pia in the comments and your idea might be our next episode!

#LetsRewind #JagadishChandraBose #ScienceHistory #AmazingInventors #STEMStories #HistoryPodcast

Meet Al-Biruni in a MEGA exciting historical adventure! In this episode of Lets Rewind we follow a curious scholar who learned new languages, climbed a rocky summit, and used simple tools and clever math to measure the size of the Earth.

Why this story is special: It's a calm, inspiring tale about curiosity, respect, and how careful observation and clear steps can reveal BIG secrets about our world. Perfect for young explorers who love science, maps, and true history!

Historical Fun Fact: Al-Biruni measured Earth by noting the tiny dip of the horizon from a mountain and using geometry to compute the planet's radius, getting a result very close to modern values!

Did you know? Could you measure something as huge as the Earth using only a stick, the Sun, and some angles?

Ben & Pia guide you through the story with wonder and simple explanations so you can try the ideas yourself and imagine ancient tools like the astrolabe and alidade.

Which story do you want to hear next?

#LetsRewind #AlBiruni #History #Science #Astronomy #AncientScience #STEM #LearningIsFun

Join Ben & Pia on a MEGA exciting journey inside NASA's Langley lab to meet Mary W. Jackson — from human computer to NASA's first Black female engineer!

This episode turns real science into an adventure: roaring wind tunnels, late-night study lamps, courtroom courage, and a life spent opening doors for others. Perfect for curious minds who love history, science, and inspiring heroes.

Historical Fun Fact: Mary took night engineering classes after winning a judge's order so she could attend classes at a segregated school — a rare courtroom victory that changed her life and many others.

Did you know? Mary began as a human computer doing precise hand calculations before becoming an accredited NASA engineer and later a leader who created training and opportunity programs.

Ben & Pia bring this incredible, heartwarming story to life with calm narration and vivid sound scenes. Which story do you want to hear next?

#LetsRewind #MaryJackson #NASA #HiddenFigures

#STEM #History #Inspiration #WomenInScience

Step into a glowing 15th-century workshop and meet Johannes Gutenberg in an unbelievable tale of invention and hope!

This episode of Lets Rewind brings a lively, gentle adventure perfect for curious 7-13 year olds — stained fingers, bubbling ink, tiny metal letters, and a giant wooden press that changed the world. Ben & Pia guide you through sparks, mistakes, teamwork, and the very first movable type in Europe.

Historical Fun Fact: Gutenberg's ink was oil-based (not the watery ink used for handwriting) — that sticky black formula helped metal type transfer crisp letters to paper for the first time in Europe.

Did you know? Metal movable type had appeared in East Asia centuries earlier, but Gutenberg combined metal type, a special oil ink, and a screw press into a system that spread across Europe.

Which story do you want to hear next? Tell Ben & Pia in the comments and we'll rewind another amazing moment from history!

#LetsRewind #Gutenberg #HistoryAdventure #PrintingPress #HistoryForKids #STEMHistory #AmazingInventions

Join Ben & Pia on an amazing Lets Rewind! adventure about Milton Hershey — a boy from Pennsylvania who fails again and again and then builds chocolate for the people and a whole town around it!

This story is full of hope, clever inventions, and big choices. Kids will love the candy-making machines and the idea of turning mistakes into something amazing. Teens and grown-ups will spot the hard decisions about work, money, and fairness.

Historical Fun Fact: Milton sold his successful Lancaster Caramel Company for about one million dollars and used much of that money to build the Hershey Chocolate Company and fund a school for orphan boys.

Did you know? How could a simple machine at the 1893 Chicago World’s Fair change the way chocolate was made for millions of people?

Which story do you want to hear next? Tell Ben & Pia in the comments!

#LetsRewind #MiltonHershey #HistoryForKids #AmazingStories #ChocolateHistory

The incredible true story of Dr. Charles Drew - the brilliant doctor who invented modern blood banks and saved countless lives!

Historical Fun Fact: Dr. Drew discovered that plasma (the clear part of blood) could be stored much longer than whole blood, revolutionizing emergency medicine!

Did you know that Charles Drew's blood banking methods helped save thousands of soldiers during World War II and are still used in hospitals today?

Ben & Pia tell you this inspiring story of a medical hero who stood up for science and fairness!

Which story do you want to hear next? Write it in the comments!

#LetsRewind #History #MedicalHeroes #CharlesDrew #BloodBank #HistoryForKids #KidsPodcast #LearningIsFun #Science #Medicine

A vivid true story of curiosity, burrs, and the invention that stuck with the world!

Join Ben & Pia as they explore how a Swiss engineer's walk in 1941 led to an invention used in hospitals, space, sports, and everyday life. This episode shows how careful observation, playful experiments, and clever machines turned a tiny seed into hook-and-loop fasteners that changed how we close things. Perfect for curious listeners who love science, inventions, and real-life mysteries solved step by step.

Historical Fun Fact: Georges de Mestral filed his first hook-and-loop patent in 1955 after more than a decade of testing and refining his idea inspired by burdock burrs.

Did you know? How could a tiny plant seed teach an engineer a design used in spacecraft and surgical gear?

Which story do you want to hear next?

Hosted by Ben & Pia — adventure, facts, and fun in every episode!

#LetsRewind #History #Inventions #GeorgesDeMestral #Velcro #ScienceStory #Biomimicry #STEMFun

Join Ben & Pia on a warm, thrilling journey from sawdust to snapping studs!

This episode tells the true story of Ole Kirk Christiansen, a Danish carpenter who rebuilt after fires, learned new crafts, and — with his son Godtfred — helped create the LEGO brick we know today. Expect cozy workshop scenes, brave choices, and the clever moment when the stud-and-tube system clicked into place.

Historical Fun Fact: The modern interlocking brick patent was filed on January 28, 1958, after years of tests adding internal tubes to make bricks grip better.

Did you know? Why did Ole switch from wood to plastic after World War II, and how did a simple Danish motto guide the company's choices?

Ben & Pia host this MEGA exciting, family-friendly WOW-Story full of hope, clever inventions, and hands-on craft.

Which story do you want to hear next?

#LetsRewind #History #LEGO #OleKirkChristiansen #Invention #PlayfulLearning

Join Ben & Pia on an incredible Lets Rewind! adventure about Bessie Coleman — the brave woman who flew past unfair rules and became the FIRST Black woman to earn an international pilot license!

This story is full of daring flights, old wooden planes, French airfields, and the bright hope of a girl who wanted to touch the sky. Perfect for curious young minds who love history, heroes, and real-life adventures. Listen as we travel from dusty Texas porches to roaring airshows in the 1920s.

Historical Fun Fact: Bessie earned her pilot license from the Fédération Aéronautique Internationale in France on June 15, 1921 — she had to learn French and raise money to get there!

Did you know? She refused to perform unless airshows allowed Black and white spectators the same entrance at the gate.

Which story do you want to hear next? Tell Ben & Pia in the comments and we might rewind to it next!

#LetsRewind #BessieColeman #AviationHistory #BlackHistory #InspiringWomen #HistoryPodcast