Third Pod from the Sun

Why do people feel they way they do about issues? Why do lawmakers and policy leaders seemingly act against their better interests? And how can information be developed in a way that leads not just to greater understanding, but to better decision making? Two veterans of the climate and risk management field, Dr. Roger Pulwarty and Dr. Michael Hayes, discuss how important it is to line up the scien...

In 1991, the United States government unearthed a staggering archaeological find during construction of a federal office building in lower Manhattan. While digging the building’s foundations, construction crews stumbled upon skeletal remains from the “Negroes Burial Ground,” a 6.6-acre cemetery of more than 15,000 free and enslaved Africans who lived in New York during the 17 th and 18 th centurie...

An analysis of timber used to construct buildings in Europe hundreds of years ago is giving scientists and historians new insights into the region’s history from the 13 th to 17 th centuries. Using samples of wood taken from old buildings in Europe, Fredrik Charpentier Ljungqvist, a historian and paleoclimatologist at Stockholm University, and Andrea Seim, a dendrochronologist at the University of...

Bärbel Hönisch, Associate Professor of Environmental Sciences at Columbia University also known as Queen of Boron, transported us millions of years beyond the ice cores to the realm when Greenland had no ice. She took hold of a magical instrument and fell in love with plankton. Diving off One Tree Island near the Great Barrier reef, she conducted research in the blue water, and at times rose among...

Drilling engineer and ice core scientist Robert Mulvaney has driven thousands of kilometers over Antarctica in the past few years in a snow tractor, creeping slowly over one of the highest points of the ice sheet, near a location known as Dome C. He’s looking for the perfect place to drill one and a half million years into the past. Gas trapped in the ice as it formed holds clues to Earth’s past c...

Lori Glaze, Acting Director of the Planetary Science Division at NASA Headquarters, works with everything from understanding asteroid trajectories and material make up to the InSight mission which recently landed a rover on Mars. It’s no exaggeration to say Lori Glaze’s impact on our understanding of the relationships between Earth and our nearest neighbors is volcanic. In fact, eruptions fascinat...

The Johnstown Flood occurred on May 31, 1889, after the  failure of the South Fork Dam , which is located on the south fork of the Little Conemaugh River , 14 miles upstream of the town of Johnstown, Pennsylvania . The dam, constructed to provide a recreational resource in part to support The South Fork Fishing and Hunting Club, broke after several days of extremely heavy rainfall that liquified t...

What’s it like to be a seismologist who’s studied the Marcellus Shale and San Andreas Fault, worked around the world from Pennsylvania to Rome, and is now a professor at the University of Oklahoma? We found out at AAA’s annual meeting earlier this year when we talked to assistant professor Brett Carpenter. Just a sampling of what we talked about: · Being gifted a piece of Indiana limestone from a...

Mineralogist Jeff Post has a one-of-a-kind job: he’s curator of the National Gem and Mineral Collection, a collection of over 375,000 rock and mineral specimens housed at the National Museum of Natural History in Washington, D.C. In addition to spectacular specimens of rare minerals and crystals, the collection contains over 10,000 gemstones, including the infamous Hope Diamond, one of the most va...

Mineralogist Jeff Post has a one-of-a-kind job: he’s curator of the National Gem and Mineral Collection, a collection of over 375,000 rock and mineral specimens housed at the National Museum of Natural History (NMNH) in Washington, D.C. In addition to spectacular specimens of rare minerals and crystals, the collection contains over 10,000 gemstones, including the infamous Hope Diamond, one of the...

Mining is more than just harvesting natural resources – it’s about who owns those right and what the land that those mines are on mean to the people who live there. Lydia Jennings of the Pascua Yaqui and Huichol Nations grew up seeing friends and family fighting to advocate and protect their communities from being mined. Later in life she became an avid trail runner who loves to do anything outdoo...

Earlier this year, scientists reported that radioactive fallout from nuclear accidents and weapons testing is present in ice sediments on the surface of glaciers in the Arctic, Iceland, the Alps, the Caucasus, British Columbia and Antarctica. The presence of this radioactivity poses a potential problem to humans and animals living near glaciers. As the ice melts as a result of climate change, the...

Rafael Loureiro may confess to being an introvert, but he has no fear of people. He started off talking about AGU’s Voices for Science initiative, which he is participating in this year to develop his science communication and policy skills. That segued into his personal philosophy going back to his upbringing and study in Brazil. What makes a scientist a scientist, in Rafael’s view, is their comm...

Nina Lanza is a member of a research team hunts for meteorites in Antarctica. In this bonus clip from Episode 23, Between a Varnished Rock and a Hard Place, Nina describes the remote location where they set up camp, being holed up while the howling katabatic winds battered her tent and her brain, and explains the strategies and techniques for searching for and collecting space rocks that are lost...

Scientists have been testing whether life exists on Mars for over 40 years, ever since the Viking 1 lander touched down on the Red Planet. Researchers often perform experiments on Earth to better understand the context of data collected by Viking 1 and subsequent landers – data that gives scientists tantalizing clues about the habitability of the Martian surface. In this episode, Los Alamos Nation...

We're trying something new with Third Pod. In addition to your regularly scheduled programming, we're going to showcase short stories from scientists in a new series we're dubbing  Sci & Tell . Like show & tell, but with science (and audio)! Dr. Jim Green has spent 38 years of his life working at NASA. He started there with a fresh Ph. D. in Earth magnetospheric science and helped pioneer...

Xavier Le Pichon came to Lamont Geological Observatory in 1959 and spent four months aboard the R/V Vema as a physical oceanography technician. The research cruise set out to test the existence of the mid-ocean ridge system: a long chain of seismically active mountains running along the ocean floor. Le Pichon would go on to be one of the scientists on the forefront of the plate tectonics revolutio...

Physicist Marius Millot investigates the intimate atomic worlds of elements in order to understand the inner secrets of the largest planets in our solar system. Jupiter and its fellow gas giants Uranus, Neptune and Saturn are comprised mostly of the lightest element, hydrogen, with a dab of helium, heavier elements, and more complex molecules. But researchers want to know what lurks at the planet’...

Many people have emergency kits packed to flee or survive forces of nature like floods, hurricanes, or wildfire. But what do you throw in your bag when you expect to rush toward a natural hazard? Geologist John Ewert has his go-kit packed with portable seismometers and gas-monitoring equipment, ready to mobilize when a volcano starts to rumble. Ewert started his career at the U.S. Geological Surve...

Much like x-rays can show broken bones (or noses), seismic equipment can show us what’s going on in Earth’s interior. While seismologists can’t take quick snapshots like medical doctors can, they can provide an image of tectonic plate movements over time to help the scientific community – and local communities – understand geophysical phenomena from mountain formations to volcanoes to the earthqua...

In 1972, in the waning years of the Vietnam War, U.S. military pilots flying south of Haiphong harbor in North Vietnam saw something unexpected. Without explanation, and without warning, over two dozen sea mines suddenly exploded. While the phenomenon was never officially explained, it peaked the interest of geo-space scientist Delores Knipp. Knipp is a research faculty member at the University of...

One of the most alluring parts of Earth and space science is that much of the key research takes place in the field, in some of the most incredible – and inhospitable – environments on the planet: on treacherous polar ice sheets, abroad sea tossed ships, at the mouths of active volcanoes, beneath turbid ocean waters, and atop the highest the highest windswept peaks. Under these often less than ide...

Venus, Earth’s nearest planetary neighbor, is a rocky world close in size to our own. In our solar system, it is the planet most like Earth. But Earth and Venus have taken different developmental paths, creating curious contrasts for scientists interested in planetary evolution. Conditions on Venus are not friendly to exploration. The thick, reflective atmosphere that makes Venus the brightest pla...