logo
episode-header-image
Aug 2020
4m 22s

Alaska's Salmon Are Shrinking

Scientific American
About this episode

Every year, Alaska’s big salmon runs feature smaller salmon. Climate change and competition with hatchery-raised salmon may be to blame. Julia Rosen reports.

Learn more about your ad choices. Visit megaphone.fm/adchoices

Up next
Jul 9
What Does an Ailing Coral Reef Sound Like?
Sick coral reefs are visually striking—bleached and lifeless, far from the vibrancy we’ve come to expect. But what does an unhealthy coral system sound like? In this rerun, conservation bioacoustics researcher Isla Keesje Davidson tells Science Quickly all about the changing soun ... Show More
16m 51s
Jul 7
An Astronaut Shares His Passion for Space Photography—Live, from the ISS Cupola
Ten months ago Science Quickly made space history by conducting the first-ever live interview from the cupola of the International Space Station (ISS). Astronaut Matthew Dominick spoke with Rachel Feltman about his work on the ISS and the stunning space photography that first cau ... Show More
17m 35s
Jul 2
Move Over Fireworks—Drone Shows Are Taking to the Skies
Drone shows are replacing fireworks for summer celebrations. They’re safer and more environmentally friendly but complicated to program and run. A recent preprint paper proposes an algorithmic solution that can take some technical challenges out of drone operators’ hands and give ... Show More
16m 6s
Recommended Episodes
Feb 2020
A Tale of Two Fish: Salmon, the wild and farmed
Dan Saladino investigates the possible extinction of wild Atlantic salmon within 20 years. Dan travels from the River Spey on Scotland's east coast to fish farms in the west in order to plot the decline of one species, the wild salmon, and the rise of another, farmed salmon.From ... Show More
28m 49s
Oct 2023
Which is healthier, farmed or wild salmon?
Salmon farming is a massive global industry. Just off the coasts of countries like Norway or Chile, hundreds of millions of these fish swim around inside big ocean nets. They provide crucial proteins and fatty acids to many people’s diets, but are they more or less healthy than t ... Show More
36m 22s
Jul 2023
A Closer Look At Why Salmon Season Is Closed This Year
This year, there's no fresh, locally caught salmon. The season was closed. So few adult fish are now in the ocean off the California coast, fisheries managers decided they all were needed to return to their natal streams and spawn.Guest: Danielle Venton, KQED Science Reporter Muc ... Show More
10m 34s
Dec 2022
Checks and Balance: Alaska, part two—thin ice
Alaska has an obvious imperative to develop its oil. But climate change is already underway, and the Arctic is warming at nearly four times the global rate. What does our thirst for oil mean for Alaska’s ice? In the second episode of a special two-part series, Charlotte Howard re ... Show More
31m 50s
Jun 2022
13/06/22 - salmon and rising egg costs
All week on Farming Today we're looking at the salmon industry - from wild populations to salmon farming. Scottish salmon is the UK’s biggest fresh food export with overseas sales hitting £614 million in 2021, up 36 per cent from 2020. But it can be a controversial topic and we h ... Show More
11m 34s
Nov 2021
Salmon wars
Sockeye and Chinook salmon make one of the world's great animal migrations, swimming 900 miles from the Pacific Ocean up 6,500 feet into Idaho’s Sawtooth Mountains, where they spawn and die - but that journey may not happen much longer. In addition to the gauntlet of predators th ... Show More
27m 12s
Jun 2022
15/6/22 - Regenerative farming, wild salmon and seabird deaths
The Sustainable Food Trust publishes a report today exploring regenerative farming and what impact this might have on self-sufficient food production in the UK. This year was one of the worst avian flu outbreaks for poultry and the disease is also hitting sea birds. Hundreds of b ... Show More
13m 35s
Mar 2023
What we lose if the Great Salt Lake dries up
Dotted across the Great Basin of the American West are salty, smelly lakes. The largest of these, by far, is the Great Salt Lake in Utah. But a recent report found that water diversions for farming, climate change and population growth could mean the lake essentially disappears w ... Show More
12m 31s
Apr 2023
Where are the whales? Scientists find clues thousands of miles away
Endangered North Atlantic right whales are disappearing from their native waters, a serious danger for a species with only 340 animals left. The mystery behind this change took NPR's climate reporter Lauren Sommer 2,000 miles away to the world's second-largest ice sheet, sitting ... Show More
12m 30s
Sep 2014
El Nino: Driving the Planet's Weather
Meteorologist, Peter Gibbs investigates the global impact of the weather phenomenon El Nino. Forecasts predict El Nino will occur at the end of this year, creating fear in many communities around the world.Flooding, drought and famine have all been caused by the phenomenon in the ... Show More
27m 42s