Quantum Dot Antibiotics // Shrinking Ozone Hole

Quantum Dot Antibiotics (c Shelley Schlender)

Quantum Dot Antibiotics (c Shelley Schlender)

Quantum Dot Antibiotics (starts 1:00) This programmable antibiotic might keep pace with quickly evolving superbugs.  Unlike most drugs – it’s not derived from biological sources.  It’s a tiny version of the semiconductors in everything from TVs to iphones to solar panels.  This “antibiotic” is made of nanoparticles, known as quantum dots.  CU Biofrontiers scientists Prashant Nagpal and Anushree Chatterjee explain their new invention.

South Pole ozonesonde (balloon) launch. c NOAA

South Pole ozonesonde (balloon) launch. c noaa

Shrinking Ozone Hole – (starts 15:24) The ozone hole is finally growing smaller – we’ll find out why and how long it will take to completely “heal” the ozone hole from Birgit Hassler, a researcher with the Cooperative Institute for Research in Environmental Sciences (CIRES), a partnership between the University of Colorado Boulder and the National Oceanic and Atmospheric Administration (NOAA).

Hosts: Shelley Schlender, Susan Moran
Producer:Shelley Schlender
Engineer:Shelley Schlender
Executive Producer: Susan Moran

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2016 Graduation Special (part 2)

diploma-and-graduation-hatIn this follow-up episode of our “Graduation Special” we talk with three more guests graduating with science Ph.D.’s from the University of Colorado in Boulder.  They join us to talk about their thesis research, their grad school experiences, and what they have planned next:

CarleighSamson_headshotCarleigh SamsonEnvironmental Engineering Program
Topic: Modeling Relationships between Climate, Source Water Quality and Disinfection Byproduct Formation and Speciation in Treated Drinking Water

View More: http://americanchemicalsociety.pass.us/headshotsPatrick BarbourDepartment of Chemistry and Biochemistry
Topic: Property-Guided Synthesis of Tricyclic Indolines to Confront Antibiotic Resistance in Methicillin Resistant Staphylococcus aureus

94938Greg ThompsonDepartment of Atmospheric and Oceanic Sciences
Topic: Advances in a Microphysics Parameterization to Predict Supercooled Liquid Water and Application to Aircraft Icing

Host / Engineer : Shelley Schlender
Producer : Joel Parker
Executive Producer : Shelley Schlender

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2016 Graduation Special (part 1)

diploma-and-graduation-hatThe graduation season is upon us and our guests in today’s show will be graduating with science Ph.D.’s from the University of Colorado in Boulder.  They join us to talk about their thesis research, their grad school experiences, and what they have planned next:

greg_banditGreg SalvesenDepartment of Astrophysical and Planetary Sciences
Topic: Rethinking Accretion Disks Around Black Holes

small_headshotJesse NusbaumerDepartment of Atmospheric and Oceanic Sciences
Topic: An Examination of Atmospheric River Moisture Transport and Hydrology Using an Isotope-enabled Climate Model

Odessa ReunionOdessa GomezEnvironmental Engineering Program
Topic: Characterizing Responses of Primary Biological Aerosols to Oxidative Atmospheric Conditions


Host / Producer / Engineer : Joel Parker
Executive Producer: Shelley Schlender

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Prairie Wildfire // Predicting Heat Waves // Mapping Nitrogen Pollution

credit Karen McKinnon - Pacific ocean and atmosphere can predict a heat wave in the Eastern US.

credit Karen McKinnon – Pacific ocean and atmosphere can predict a heat wave in the Eastern US.

Prairie Fire (start time: 0:57) Journalist and Megafire expert Michael Kodas discusses the raging Kansas prairie fire and how it compares to wildfires in Colorado.

Pacific Temperatures Predict New York Heat Waves (start time: 6:58) Climatologist Karen McKinnon says it’s possible to use precise monitoring of Pacific Ocean surface temperatures to predict heat waves on the East Coast 50 days in advance.

Mapping Nitrogen Pollution (start time: 15:45)  CU scientist Sam Simkin explains how human-caused nitrogen pollution  may be killing off plant diversity throughout the US . . . and his maps show where.

Hosts: Shelley Schlender, Susan Moran
Producer: Shelley Schlender
Engineer: Shelley Schlender
Additional Contributions: Tom Yulsman
Executive Producer: Joel Parker

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Beyond Cop21Paris: Climate Science & Policy

Today, Dec. 8, we offer the following feature:

Waleed Abdalati

Waleed Abdalati, photo credit David Oonk/CIRES

Changing Climate, Changing Policy (start time: 7:06): As political leaders are still hammering out an accord at the UN Climate Summit, or COP21, in Paris, to rein in global warming, today we discuss the underlying scientific facts about climate change, and the policy promises and challenges for our future. Hosts Susan Moran and Daniel Glick interview two Colorado scientists at the intersection of science and policy. Dr. Waleed Abdalati is a geoscientist and director of the Cooperative Institute for Research in Environmental Sciences (CIRES), a partnership between the University of Colorado-Boulder and the National Oceanic and Atmospheric Administration.

Lisa Dilling with CIRES at the University of Colorado Boulder. (Photo by Casey A. Cass/University of Colorado)

Lisa Dilling, photo credit Casey A. Cass/University of Colorado

Dr. Lisa Dilling is an associate professor of environmental studies, also at CIRES, who brings expertise in science policy related to climate issues. She directs The Western Water Assessment, a NOAA program that provides information for policy makers throughout the Intermountain West about the region’s vulnerabilities to climate change impacts. Contributing host Daniel Glick was an editor of the 2014 National Climate Assessment, and his team has produced videos on the immediate and human impacts of climate change.

Hosts: Daniel Glick, Susan Moran
Producer: Susan Moran
Engineer: Maeve Conran
Executive Producer: Beth Bennett
Additional contributions: Joel Parker, Shelley Schlender

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Arctic Frontiers // Wind Forecasting

Sami and reindeer in Finnmark, Norway. Photo credit: Thomas Nilsen/The Barents Observer

Sami and reindeer in Finnmark, Norway. Photo credit: Thomas Nilsen/The Barents Observer

Arctic Dispatch (starts at 2:18): There is no question that the Arctic is thawing faster than anywhere on the planet, except the western Antarctic Peninsula. But there are still so many unknowns regarding how things are actually changing in different places, and to what effect. How On Earth’s Susan Moran recently attended the Arctic Frontiers conference in Tromso, Norway. Among the scientists who discussed research on how the receding and thinning ice in the Arctic will likely affect different species was  George Hunt, a research professor of biology at the University of Washington. Aili Keskitalo, an indigenous Sami from Finnmark, Norway and president of the Sami Parliament, discussed how energy projects, including windmill parks, are negatively affecting reindeer and Sami culture. Hunt and Keskitalo discussed these issues with Moran.

Wind turbines, Photo credit: National Renewable Energy Laboratory

Wind turbines, Photo credit: National Renewable Energy Laboratory

Wind forecasting (starts at 10:40): The wind industry in the U.S. faces several hurdles, including a technical one: discovering how the wind is going to blow near the mountains. For power systems to be reliable, operators must know when to expect the blustery gusts or when to expect a still breezeless calm day.  That means they need accurate wind forecasts.  The Department of Energy has just given a substantial grant to a coalition of organizations in Colorado to help improve wind energy forecasting in mountain and valley regions. Julie Lundquist, a professor of atmospheric and oceanic sciences at the University of Colorado, discusses the current and planned research with co-host Jane Palmer.

Hosts: Susan Moran, Jane Palmer
Producer: Susan Moran
Engineer: Kendra Krueger
Executive Producer: Kendra Krueger

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Coral Climate Clues // Tropical Carbon Sink

On today’s show we offer three feature interviews, including a short opening interview.


Credit: Russell Kane, Creative Commons

Alcohol and weight gain (starts at 3:34): Science journalist Jill Adams shares the latest science on the connection between alcohol and weight gain. The science is murky, as she states in her recent column in the Washington Post.


Scientists drilling a coral sample from Jarvis Island. Photo credit: Julia Cole

Scientists drilling a coral sample from Jarvis Island. Photo credit: Julia Cole

Climate Clues in Coral (starts at 9:02): Despite certain appearances and rumors to the contrary, global warming has not been on holiday for the past decade. But increases in temperature at the Earth’s surface have slowed down, prompting scientists to work hard to figure out why. It seems that a lot of heat that has been building up in our planet’s climate system due to greenhouse gas emissions has winded up deep in the Pacific Ocean. Why? Diane Thompson, a post-doctoral scientist at NCAR and lead author on a new study, discusses with HOE’s Tom Yulsman how a sample of coral from a remote atoll in the tropical Pacific revealed some important answers.

Tropical forest in the Serra do Mar Paranaense in Brazil. Photo credit: Deyvid Setti e Eloy Olindo Setti via Wikimedia Commons

Tropical forest in the Serra do Mar Paranaense in Brazil. Photo credit: Deyvid Setti e Eloy Olindo Setti via Wikimedia Commons

Tropic forests love CO2 (starts at 16:04) It’s been known for some time that tropical forests are not only rich in biodiversity, but they also absorb a lot of carbon dioxide that humans spew into the atmosphere.  But just how much greenhouse gases—namely CO2–these forests take up, say, compared with temperate and boreal forests, has been eluding researchers.  Britton Stephens, an atmospheric scientist at NCAR, discusses with HOE’s Susan Moran a new study he co-authored. It suggests that tropical forests may be absorbing far more CO2 than many scientists had previously thought.

Hosts: Susan Moran, Tom Yulsman
Producer: Susan Moran
Engineer: Shelley Schlender
Executive Producer: Kendra Krueger


Beringia // Dolphins & Climate Change // The Ogallala Road

Beringia_land_bridge-noaagovBeringia (start time 0:55). We present an excerpt of  Shelly Schlender’s  interview with University of Colorado scientist John Hoffecker, lead author of a recent paper in Science magazine about the Beringia land bridge and the people who lived there 25,000 years ago.  The full interview can be found here.


Dolphins & Climate Change (start time 4:40). Dr. Denise Herzing, the founder of the Wild Dolphin Project, has been building relationships with Atlantic Spotted Dolphins for 28 years. meet-dolphins2 Her quest to learn whether dolphins have language, and to learn that language, is notable for its longevity. But her relationship with them is remarkably respectful, too. We last spoke to Dr. Herzing in the spring of 2012, about her book Dolphin Diaries: My 25 Years With Spotted Dolphins in the Bahamas. We’re very glad that she’s with us again, to help us learn about how large marine mammals may be responding in unusual ways to changes in the oceans.

the-ogallala-road-coverThe Ogallala Road (start time 15:15).  We often hear about how the Colorado River is running dry. The Western  states that rely on its flowing water are struggling to reckon with how its depleting reservoirs will satiate growing  populations. You’ve probably seen images of the white “bathrub rings” at Lake Powell and Lake Mead that expose the water line rings of years ago.  But there’s an equally dramatic and dangerous drop in an invisible source of water. That’s the Ogallala Aquifer – an underground basin of groundwater that spans eight states on the High Plains, including Colorado. Nearly one third of irrigated cropland in the country stretches over the aquifer. And the Ogallala yields about a third  of the ground water that’s used for irrigation in the U.S.  The story of the Ogallala’s depletion is a very personal one for author Julene Bair. She lives in Longmont, but years ago she learned that the family farm in Kansas that she inherited had been a big part of the problem. Julene has written about her journey, including her desire to make the farm part of the solution. Julene joins us on the show to talk about her new book  The Ogallala Road: A Memoir of Love and Reckoning.

Hosts: Jim Pullen, Susan Moran
Producer: Joel Parker
Engineer: Joel Parker
Executive Producer: Jim Pullen
Additional contributions:  Shelley Schlender

Listen to the show:


Engineering for Kids // Antarctica’s Ross Sea

On Tuesday, Nov. 26, How On Earth brings you two features:

Feature #1: (start time 5:53) STEM, as you may well know, stands for Science, Technology, Engineering and Mathematics. Many math and science topics are introduced throughout most years of primary education, but technology and engineering — not so much. We live in a world surrounded by things imagined and designed and built by engineers, from roads and buildings to computers and appliances and even food, drugs and clothing. So it’s important to understand engineering if we want to understand these life necessities. An educator tackling this issue is  Dr. Christine Cunningham, vice president of research and educator resource development for a project called “Engineering is Elementary.” It was developed by the Museum of Science in Boston. Cunningham is featured in an article, written by former How On Earth contributor Breanna Draxler, called “E is for Engineering” in the December issue of Discover magazine. Cunningham talks with host Joel Parker about how teaching engineering to very young students can be done.

Adelie Penguins in the Ross Sea
Photo courtesy John Weller

Feature #2: (start time 14:45) Arguably the healthiest marine ecosystem on Earth is the Ross Sea in Antarctica. It’s so pristine largely because it is protected by a 500-mile-wide shield of floating sea ice, and, well, it’s not exactly easy to get to.  But in recent years the Ross Sea has come under threat, largely from New Zealand industrial fishing ships that are hunting as far south as they can for the Antarctic toothfish, which was rebranded as Chilean sea bass for U.S. and other consumers. John Weller is a nature photographer and conservationist living in Boulder. He has documented the beauty and fragility of the Ross Sea in his new book, The Last Ocean. Weller also co-founded a nonprofit, called The Last Ocean Project, that is dedicated to protecting the Ross Sea and other fragile marine ecosystems. Weller talks about the science and art of these environments with host Susan Moran. (You also can hear a previous interview with Weller on KGNU’s Morning Magazine.)

Hosts: Susan Moran, Joel Parker
Producer: Susan Moran
Engineer: Joel Parker
Executive Producer: Beth Bartel
Additional contributions: Brian Calvert, Jim Pullen

Listen to the show here:



Feature #1: Neanderthals
(start time: 6:01)
Our Neanderthal ancestors have long been maligned as rather dim-witted cave-dwellers. But they may have been brighter — and more colorful — more like us, shall we say.  We turn to the BBC’s Science in Action for a look at new research into who these ancestors really were. Here’s BBC’s Jon Stewart.

Feature #2: Antarctica (start time: 11:03)
It may be hard for people living in Colorado and other land-locked states to grasp that our daily lifestyles – burning fossil fuels every time we turn on the lights or drive our car, for instance – affects the delicate marine ecosystems of the Southern Ocean, from the ice algae to the penguins and whales. And in turn, the health of the plants and animals, and indeed the ice they depend on, in Antarctica, affects our own health.  Cohost Susan Moran interviews Dr. James McClintock, a marine biologist at the University of Alabama in Birmingham, about his new book, Lost Antarctica: Adventures in a Disappearing Land.” He shares his adventures waaayy down under, and his concerns about the future of the fragile and stunning continent. 

Hosts: Ted Burnham, Susan Moran
Susan Moran
Engineer: Joel Edelstein
Executive Producer:
Jim Pullen

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