Interesting Things with JC #1671: "What Is the L2 Point?" – A mathematician identified a location in space in 1772 where gravity keeps spacecraft moving with Earth around the Sun, and nearly 250 years later observatories began traveling there to do some of humanity's most advanced science.

Interesting Things with JC #1670: "Napster" – On June 1, 1999, Shawn Fanning releases Napster, and within months college students are searching each other’s hard drives for MP3 files while campus networks slow under traffic and the music industry moves toward court.

Interesting Things with JC #1669: "The Rare Blue Moon" – A second full Moon rises over May, carrying a rare name it will not appear to deserve. It will not look blue, and it may look completely ordinary, but the calendar has left room for one extra full Moon ...

Interesting Things with JC #1668: "History of the Stanley Cup" – The Stanley Cup keeps changing hands while its silver bands record winners, mistakes, and accidents.

Interesting Things with JC #1667: "Gold’s Color Comes from Relativity" – Gold atoms absorb blue and violet light because fast-moving electrons near the heavy nucleus shift energy levels, leaving reds, yellows, and greens to reflect back as the familiar metallic color.

Interesting Things with JC #1666: "A Billion Seconds" - A million seconds goes by pretty fast. A billion seconds is something else entirely. Once you truly understand the difference, it changes the way you look at time, money, and the scale of the world around you.

Interesting Things with JC #1665: "Grizz Chapman" – Grizz was working security when a friendship with Tracy Morgan led to a 30 Rock audition, and the nearly seven-foot bouncer became one of the calmest, warmest faces on TV while fighting kidney disease off-camera. He pushed past the roles Hollywood

Interesting Things with JC #1664: "Rob Base" – Rob Base passed away four days after his 59th birthday, but the 1988 record he made with DJ E-Z Rock still moves crowds nearly four decades later.

Interesting Things with JC #1663: "Kyle Busch" – Kyle Busch is steering a go-kart while his father works the throttle because his feet cannot reach the pedals, and the Las Vegas kid who built racetracks from crushed soda cans grows into one of the most successful drivers in NASCAR history.

Interesting Things with JC #1662: "Ames Laboratory" – Frank Spedding’s team in Ames, Iowa turned rare uranium metal into wartime production material, using the Ames Process to supply purified uranium for the Manhattan Project while the better-known atomic sites depended on that chemistry.

Interesting Things with JC #1661: "The Earth's Core is Younger than its Surface" – A clock at Earth’s core runs slightly slower than a clock on the surface, and over 4.5 billion years that tiny relativity effect leaves the center of the planet about two and a half years younger than the ground above

Interesting Things with JC #1660: "The Adams Event" – A 42,000-year-old kauri tree held a carbon record from the Laschamps Excursion, when Earth’s magnetic field weakened, cosmic rays increased, and the upper atmosphere may have changed while the tree kept the evidence ring by ring.

Interesting Things with JC #1659: "Overmodulating the Carrier" – WMEX engineers pushed AM modulation to the edge so the station sounded louder and denser than nearby signals, with audio processing that helped 1510 punch through static, car noise, fading, and crowded nighttime dial conditions.

Interesting Things with JC #1658: "HAVOC: The Airship of Venus" – NASA engineers studied a crewed airship that would float above Venus instead of landing on its deadly surface.

Interesting Things with JC #1657: "The Stonefly of British Columbia" – Stonefly nymphs cling to rocks in cold British Columbia rivers while scientists check whether the water can still support life; when the insects disappear, the river is usually warming, polluted, or losing oxygen, and the pattern

Interesting Things with JC #1656: "Antimatter Propulsion" – Antimatter destroys normal matter on contact and converts mass directly into energy, but the fuel powerful enough to push spacecraft toward light speed cannot touch any container around it.

Interesting Things with JC #1655: "Particles Live Longer in Accelerators" – A muon forms high above Earth and should decay before reaching the ground, but many survive the trip as their internal clocks slow near light speed

Interesting Things with JC #1654: "Fusion Propulsion" – A spacecraft engine tries to push plasma at hundreds of kilometers per second while no normal material can touch the fuel. Fusion promises travel times chemical rockets cannot match, but the reaction has to be held hotter than the Sun’s core.

Interesting Things with JC #1653: "The Sugar Industry and the Scientists" – Harvard researchers published papers that downplayed sugar’s possible link to heart disease while sugar industry funding stayed undisclosed, and the blame shifted toward saturated fat as low-fat foods spread across American

Interesting Things with JC #1652: "Facebook’s Emotional Contagion Experiment" – Facebook changed the News Feeds of nearly 690,000 users to test whether emotions could spread online without telling them first, and the users’ own posts shifted after the feed was altered.