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April 6, 2020
From 1946 to 1958, the United States military conducted more than 20 nuclear bomb tests at Bikini Atoll, an idyllic tropical island in the South Pacific Ocean. During the first of these tests, conducted in July 1946, the military anchored nearly 100 warships and submarines within Bikini’s large lagoon to see how a nuclear blast would affect a naval fleet.
January 6, 2020
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.
November 18, 2019
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.
August 12, 2019
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, aboard sea tossed ships, at the mouths of active volcanoes, beneath turbid ocean waters, and atop the highest windswept peaks. Under these often less than ideal conditions, instruments …
July 1, 2019
To those of us on land, the world underneath the oceans seems quiet and serene. But scientists who study ocean acoustics will tell you it is anything but tranquil underwater. Our oceans are home to a cacophony of sounds – from the songs of marine mammals to the cracking of icebergs to the rumbling of earthquakes to the roar of ships.
May 13, 2019
Check out this clip that didn’t make it into our recent episode, Science Turns to Search and Rescue, about some of the wildlife that’s found in the Arctic.
May 6, 2019
The Arctic Ocean is topped with a layer of frozen sea water – sea ice – that grows every winter and shrinks every summer. To study the ice in detail, researchers hop aboard an icebreaker ship that can plow through the sharp, cold ice floes without being damaged.
April 15, 2019
In this centennial episode, she reveals the secrets of the mud, how humans may have weathered climate swings of the past, and what the past can tell us about our warming world.
April 1, 2019
Snapping shrimp are small but mighty creatures: they’re only a few inches long but are among the noisiest animals in the ocean. The loud cracking noise they make when snapping their claws sounds almost like a gunshot, and when enough shrimp snap at once, the din can be louder than the roar of a passenger jet flying overhead.
March 22, 2019
Hawaii is frequently described as a paradise in the Pacific Ocean, but for some scientists conducting field work, there can be some challenges to overcome. In this special episode, Kate Brauman, the lead scientist at the Global Water Initiative at the University of Minnesota, describes her field work experiences in Kona on the big island of Hawaii. Kate’s research into land use and its impact on the ground water supply …