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PAESTA Podcast Series: Episode 1 - How Do We Know CO2 is Increasing?

Atmospheric CO2 at Mauna Loa Observatory

You Asked, We Answered!

Transcript for the podcast

We know that atmospheric levels of carbon dioxide have been increasing because we have the data! The story of collecting CO2 data begins in 1958, when a geochemist from the Scripps Institution of Oceanography, Dr. Charles Keeling, started collecting measurements of carbon dioxide in the atmosphere at an observatory located over 11,000 feet in elevation on the Mauna Loa volcano on the big island of Hawaii. These systematic measurements Dr. Keeling started have become the most widely recognized record of human impact on Earth, linking rising levels of carbon dioxide from the burning of fossil fuels to the warming of the planet.

EARTH Magazine: Studies Re-examine How Major Copper Deposits Form

EARTH Magazine

From EARTH Magazine, 06/24/2015  --  Humans depend on copper for everything from electrical wiring to water pipes. To meet demand, the metal has been largely mined from Porphyry Copper Deposits (PCDs). For decades, scientists generally agreed upon the geological processes behind PCD formation; now EARTH Magazine examines two new studies that suggest alternatives to these long-held understandings.

EARTH Magazine: Science Illustrators - Making the Invisible Visible

EARTH magazine

From EARTH Magazine, 06/16/2015  --  From the tiny microcosms of atomic theory and futuristic colonies on Mars to dinosaurs walking the Earth, science illustrators translate scientific findings and theories into something lifelike, accurate and aesthetically pleasing. The July cover story from EARTH Magazine, "Science Illustrators: Making the Invisible Visible," takes readers on a behind-the-scenes of how illustrators transform a scientific concept into an informed work of art.

Listen Current: State versus Towns Over Fracking

Listen Current

June 4, 2015   --  The practice of fracking or extracting gas from deep inside the earth has pitted cities and towns in Texas against the state of Texas. The Texas state legislature has passed a law that takes the power to regulate the gas industry away from the cities and towns directly impacted by fracking. Who should have power to decide what happens in a town - the citizens of that town or the state legislature?

EARTH Magazine: Rock Stars - Geologists on the Silver Screen

EARTH magazine

From EARTH magazine, 05/27/15  --  As this summer's blockbuster movie season gets underway, EARTH Magazine asks an important question: In movies, "are geologists portrayed as heroes or villains?" The topic of how geologists are portrayed in film has been oft-debated around a campfire, or over a frosty beverage at the end of a day of fieldwork, but now four scientists bring some serious analysis to the subject in the June issue feature, "Rock Stars - Geologists on the Silver Screen."

EARTH Magazine: Beyond the Bomb - The World's Nuclear Watchdog Expands Its Science

EARTH Magazine

From EARTH Magazine, 04/28/15  --  The Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) was formed in 1996 to monitor the planet for evidence of rogue nuclear weapons tests and explosions. In its May issue, EARTH Magazine spotlights how the CTBTO's worldwide monitoring network works and how it's using the network for civil and scientific applications beyond test monitoring. 

EARTH Magazine: Escape from Alcatraz - Modern Modeling Adds to a Decades-Old Mystery

EARTH Magazine

From EARTH Magazine, March 18, 2015 - Did they survive? Since 1962, the fate of three inmates who broke out of the famous prison on Alcatraz Island in San Francisco Bay - carrying rubber rafts fashioned out of raincoats - has remained a mystery. From the U.S. Army Corps of Engineers to the hosts of the show "Mythbusters," many have tried to figure out what happened to the escapees. Now, EARTH Magazine brings you news of an effort led by a research team from Delft University in the Netherlands.

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