EarthDate
Switch Energy AllianceEarthDate is a short-format weekly audio program delivering concise, science-based stories about the Earth: its geology, environments, and the processes that shape our planet over deep time and today. Beginning in 2026, EarthDate is managed by Switch Energy Alliance and hosted by SEA's founder Dr. Scott W. Tinker. Together, we explore earth systems, natural resources, and their relevance to everyd... more
| Publishes | Daily | Episodes | 166 | Founded | a month ago |
|---|---|---|---|---|---|
| Number of Listeners | Categories | EducationScienceEarth Sciences | |||
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Latest Episodes
Machu Picchu, the Incan city built on a jagged mountain peak, is so remote that the Spanish conquistadors never found it. It’s difficult to get to, even today.
We’ve long wondered why the Inca built it there. New research suggests they chose the sit... more
Today, emeralds may be a bit less famous than their red, white, and blue cousins—diamonds, rubies, and sapphires. But they were once perhaps the most celebrated gemstone.
3,500 years ago, the Egyptians found emerald deposits in their kingdom. They a... more
On a previous EarthDate we talked about GPS, the Global Positioning System, and recent improvements that allow mapping down to the millimeter—accurate enough to detect the creeping movement of Earth’s tectonic plates.
These advances have inspired sc... more
If you’ve ever walked through an aspen grove, you’ve seen hundreds or thousands of white trunks propping up a sky of silvery green leaves trembling in the wind.
In the fall, all the leaves in one grove will go from green to gold at the same time.
T... more
When you see white, you’re actually seeing all the visible colors of light at once.
And when you see black, the object you’re looking at is absorbing light.
White and black aren’t colors; they’re visual experiences.
And a few rare animals can prod... more
North America’s Great Lakes are great indeed.
They contain 20 percent of the planet’s surface freshwater—enough to cover the continental U.S. 10 feet deep.
They formed at the end of the last Ice Age, when Canada was under an ice sheet 3,000 to 9,00... more
In previous episodes, we’ve talked about geothermal energy—the heat of the earth.
Where extreme heat is near the surface, it can be used to produce steam to drive electric generators. Where this heat warms groundwater, it makes hot springs.
But the... more
Plains Indians depended on buffalo for everything: meat for food, hide for clothing, horns and bones for weapons and tools.
One of the ways they hunted them was by stampeding them over cliffs.
Scientists thought that humans practiced communal hunti... more
Key Facts
Chart Rankings
How this podcast ranks in the Apple Podcasts, Spotify and YouTube charts.
Apple Podcasts | #153 |  United States/Science/Earth Sciences |
Top Earth Sciences Podcasts
Audience Metrics
Listeners, social reach, demographics and more for this podcast.
| Listeners per Episode | Gender Skew | Location | |||
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| Interests | Professions | Age Range | |||
| Household Income | Social Media Reach | ||||
Frequently Asked Questions About EarthDate
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How many episodes of EarthDate are there?
EarthDate launched a month ago and published 166 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.
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