logo
episode-header-image
Oct 2023
13 m

Seaweed is piling up on beaches. This ro...

NPR
About this episode
A new robot is designed to sink sargassum before the stinky seaweed comes ashore. Blooms of sargassum, a leafy brown seaweed, have increased in size and number over the past decade. As the blooms have grown, so too has their impact on coastal communities. The stinky seaweed can wreck local economies and ecosystems — and even threaten human health, some research suggests. But the creators of the AlgaRay say that their robot might do more than halt this damage. It could also fight climate change.

This week NPR is doing something new — dedicating an entire week to stories and conversations about the search for climate solutions. Head to npr.org/climateweek for more stories of solutions.

Have a science query? Email us at shortwave@npr.org — we'd love to know!

Learn more about sponsor message choices: podcastchoices.com/adchoices

NPR Privacy Policy
Up next
Today
Nature Quest: What Does Climate Change Sound Like?
Feel like summers are hotter than they used to be? It’s not just your imagination. Climate researchers say that average annual temperatures around the country have been trending upwards for the past 50 years — and are still on the rise. But it can be hard to represent those numbe ... Show More
13m 31s
Yesterday
Sea Camp: To Mine Or Not To Mine
Deep sea mining for rare earth elements could start as early as 2026, even as 38 countries have called for a moratorium on it. The metals that companies are targeting are used in many green technologies like electric cars and wind turbines – but mining them is destructive to the ... Show More
13m 17s
Aug 22
Could labs replace your natural chocolate?
Chocolate may fill grocery store shelves around the world, but the raw product that powers chocolate is far more selective. The majority of chocolate farms are found in West Africa and South America – just 20 degrees north or south of the equator. Each farm produces chocolate of ... Show More
8m 50s
Recommended Episodes
Apr 2023
What’s feeding the 5,000-mile blob of seaweed growing in the Atlantic?
A giant mass of seaweed is heading towards beaches in Mexico, Florida and the Caribbean, bringing with it toxic gases and a smell similar to rotting eggs. Visible from space, the Great Atlantic Sargassum Belt stretches from the coast of Africa all the way to the Gulf of Mexico. I ... Show More
16m 32s
Jun 2024
Seaweed: the super weed?
It's a familiar feature of our oceans and beaches and yet its environmental impact has largely been overlooked. Now supporters say seaweed can help us address climate change by reducing our reliance on fertilisers, and by reducing the methane emissions produced by cows. On top of ... Show More
17m 28s
Aug 2023
Drowning coastal ecosystems
Global sea levels are rising more than 3mm per year under current climate conditions. At this rate we are due to hit an alarming 7mm rise per year by the end of the century. If this is not slowed, it could lead to the drowning of essential coastal ecosystems like mangroves and la ... Show More
28m 5s
Nov 2021
Geoengineering The Planet
Geoengineering is already underway from Australia to the Arctic as scientists try to save places threatened by global heating. It’s time for a global conversation about how we research these powerful techniques, with agreements on how and where to deploy them. Global temperature ... Show More
27m 29s
May 2022
Babbage: Corals vs climate change
Coral reefs are increasingly under threat from global heating, but some species appear to be resistant to warmer sea temperatures. How can scientists harness these findings and revive these important pieces of marine life? Alok Jha hosts. For full access to The Economist’s print, ... Show More
31m 31s
Sep 2022
Should we mine the deep sea?
The first license of its kind has been granted for deep-sea mining. It will be used to run early tests to see whether the seabed could be good place to harvest rare earth materials in the future. These earth minerals are what powers much of our modern technology, and the demand i ... Show More
53m 37s
Feb 2021
Meeting Mars, Melting Ice, Ozone on the Mend Again, and A Sea Cacophany
Victoria Gill and guests discuss the signs and symptoms of melting ice and anthropogenic climate warming, illicit CFC production and the racket we make in the seas. As two robotic missions from UAE and China arrive at Mars , and a third from NASA arrives next week, UK astronaut T ... Show More
41m 9s
Jul 2023
An ocean of opportunities
For World Ocean Day, Gaia Vince finds out how the planet’s seas could help us to generate clean power, capture CO2 and feed the world. Gaia is joined in the studio by science journalist and marine biologist Olive Heffernan. She dives into the controversy regarding the potential o ... Show More
33m 2s
Dec 2023
What’s going on with sargassum seaweed?
Sargassum seaweed was recorded as far back as the 15th century when Christopher Columbus wrote in his expedition diaries about miles and miles and miles of dense seaweed as he crossed the Atlantic Ocean. In 2011, a great mass of this seaweed emerged, stretching from West Africa t ... Show More
23 m