How Sexual Intercourse Was Invented, 385 Million Years Ago
WEBJun 3, 2022 · Our first sexually reproducing ancestors likely just oozed up against one another at the cellular level. When did we start, you know, doing it? Our oldest evidence of penetrative intercourse is about 385 million years old and comes in the form of fossilized remains of the way too aptly named Microbrachius dicki.
How Oppenheimer’s Bombs Compare To Today’s Nukes - Science …
WEBAug 4, 2023 · How Oppenheimer’s Bombs Compare To Today’s Nukes. A mushroom column from the Trinity test in 1945. Credit: Los Alamos National Laboratory /Flickr/ CC BY-NC-ND 2.0. On the day the film Oppenheimer came out, Science Friday discussed the history of the Manhattan Project, including the legacy …
Why Are Honeycomb Cells Hexagonal? - Science Friday
WEBSep 1, 2017 · Honeybees have evolved over time to skillfully build hexagonal honeycomb cells. Why might a hexagon be a suitable shape for storing honey? Could other shapes, such as circles, triangles, or squares, work just as well? Let’s investigate this question by first making some observations of a honeycomb. We’ll take a macro, or wide, perspective so we can study the honeycomb’s overall ...
How Five Elements Define Life On Earth - Science Friday
WEBNov 3, 2023 · How Five Elements Define Life On Earth. Credit: Shutterstock with added elements. Over 99% of a human cell is made up of just five elements: carbon, hydrogen, oxygen, nitrogen, and phosphorus. That same elemental mix exists, with minor variations, in every other living thing on Earth.
Why We Need Body Fat - Science Friday
WEBJan 8, 2016 · In our weight-obsessed culture, it’s common to disparage the fat in our bodies. But body fat (scientifically termed “adipose tissue”) is a highly specialized organ, critically important for health and longevity. Among its many functions, fat surrounds and cushions vital organs like the kidneys and insulates us against the cold.
Gravity And Centripetal Force In Our Solar System - Science Friday
WEBOct 21, 2022 · You and your kids can become the Sun as you experiment with the ways gravity, inertia, and centripetal force keep the solar system in motion.
Soil Engineering: The Relationship Between Soil Texture and …
WEBJun 10, 2021 · Not all soil is the same. Explore soil texture and structure in this hands-on investigation, then predict how soil health will be affected by climate change.
What Does It Mean To Be Alive? - Science Friday
WEBApr 23, 2021 · The complexities of defining life are the subject of the new book, Life’s Edge: The Search For What It Means To Be Alive, by New York Times science columnist and author Carl Zimmer. He joins Ira to talk about the creatures that complicate our understanding of life, and if synthetic biology and artificial …
Seeing The Patterns In Sound - Science Friday
WEBNov 7, 2016 · Every object has a characteristic frequency, or frequencies, at which it vibrates most, with the least input of energy. Those vibrations are associated with standing wave patterns called modes. When the Chladni plate, for instance, vibrates in one of its modes, a pattern appears in the sand on the plate. “What’s happening is, the sand is ...
The Origin Of ‘The Five-Second Rule’ - Science Friday
WEBFeb 20, 2019 · The five-second rule as we know it today has murky origins. The book Did You Just Eat That? by food scientist Paul Dawson and food microbiologist Brian Sheldon traces the origins to legends around Genghis Khan. The Mongol ruler is rumored to have implemented the “Khan Rule” at his banquets.