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You are browsing the archive for Biogeosciences Archives - AGU Blogosphere.

30 December 2022

31-Spaceship Earth: Using satellites to feed the world

Chris Justice is a geographer and professor at the University of Maryland whose research on land use changes and global agriculture has taken him around the world.

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2 December 2022

29-Fire: Lighting the skies with fireflies

Did you ever wonder how random flashes of fireflies gradually acquire synchrony? Studies have shown that  this surreal coordination of twinkling occurs through a natural cadence among certain species of fireflies during the mating season.

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31 October 2022

Halloween special: Nessie & the kraken

We’ve all heard stories about fantastical creatures that people swear they’ve seen and have evidence of but can never be confirmed. Think Bigfoot or the Loch Ness monster. Mermaids or the Kraken. While there’s no evidence backing the existence of these creatures, either in present day or at any point in the past, there must be a reason why such legends were created in the first place. In most cases, …

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28 October 2022

24.5-A podcast of fire and ice

As the leaves change and temperatures cool, head inside, fire up your headphones, and get ready for hot-podcast fall as share stories about, well, fire. Join us over the next six weeks to hear stories about wildfires, volcanoes, fire in space, and on other planets, indigenous fire knowledge, and…fireflies!

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7 October 2022

22-Storied careers: Ocean sensors and dog scenters

Tommy Dickey is an emeritus oceanographer from U.C. Santa Barbara and Naval Operations Chair in Ocean Sciences. His modeling and observational research yielded ocean monitoring technologies and tools. For retirement, Tommy trains and deploys Great Pyrenees as therapy dogs, while studying scent dogs’ capacity to detect COVID-19.

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30 September 2022

21-Storied careers: Scouring seas from the skies

This episode is about how satellite technology is being used to study a big chunk of the earth’s surface. Seventy percent of the earth comprises water but we know very little about it. Color sensors aboard some satellites can actually reveal a lot about phytoplankton or microalgae blooms that are linked to ocean temperatures. These tiny organisms contribute to half the photosynthesis on the planet.

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19 August 2022

16-Ice: Shells of an ice-less past

Brian Huber is a climate detective at the Smithsonian who grew up collecting arrowheads in the woods of Ohio, but now collects and studies fossils from sediment cores. Brian uses fossils of tiny organisms − foraminifera − to track climate over millions of years, including the Cretaceous Hot Greenhouse climate.

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8 July 2022

11-Extinctions: Oddballs of the Triassic

Hans Sues is a fossil guy at the Smithsonian. Born in Germany, he has been all over the world finding and interpreting fossils for more than 40 years. His focus is on vertebrates – both in his professional work and his personal attachment to cats.

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24 June 2022

9-Extinctions: Not your science fair volcano

For many of us, the word “extinctions” conjures up images of dinosaurs, asteroids, and (maybe?) volcanos. And while that last point did likely play a role in the demise of the dinosaurs, volcanos in their own right can go extinct. In this episode, we chatted with volcanologist Janine Krippner, Honorary Research Associate at the University of Waikato, about what exactly makes a volcano extinct, the difference between volcanic ash and smoke, …

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17 June 2022

8-Extinctions: The (Maybe) Cambrian (Not Really) Explosion

The Cambrian explosion is commonly labelled as the time in Earth’s history when animals suddenly appear. But research from geoscientist Rachel Wood and her team turns this explanation on its head.

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10 June 2022

7-Extinctions: Dinosaurs, a Big Rock, and…Climate Change?

When you hear the word “extinction,” chances are you probably think of the extinction of the dinosaurs and a big rock. But did you know that there were other factors at play that lead to that extinction including volcanos and sea-level rise?

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20 May 2022

5-True story: A prop plane, a bucket, and a trip to Antarctica

Pacifica Sommers is an ecologist and explorer. From the deserts of Arizona to the Antarctic tundra, Pacifica has looked at how organisms from tardigrades to pocket mice live in extreme environments. We talked with her about some of the most beautiful places on Earth, the diversity of folks who can be scientists,  and what exactly that bucket is for on the flight to Antarctica.

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6 May 2022

3-True story: A Martian on Earth

Tanya Harrison never thought she was going to be an astronaut. But she was determined to go to space. And she did just that – through satellites, first to Mars, and now looking back at our own third rock from the Sun as she uses satellites to map places near and far. We talked with her about what it’s like to be a Martian, making science more accessible to those …

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