Helen Czerski, British physicist, oceanographer, and presenter for the Fully Charged Show, discusses her new book 'The Blue Machine' which explores the significance of the ocean, the impact of climate change on the poles, the importance of decarbonizing, the alarming increase in sea temperature, diving in the London Aquarium, the bioluminescent communication of the Humboldt squid, and the environmental impact and accountability of deep sea mining.
Changes in the ice on the poles have profound impacts on the entire planetary engine, highlighting the need to work with natural systems rather than against them.
Understanding how light absorption in the ocean affects visual experience and communication among marine species emphasizes the importance of depth and water clarity.
Deep-sea mining presents a conflict between economic benefits and environmental risks, calling for careful consideration and sustainable practices in resource extraction activities in the ocean.
Deep dives
The Importance of the Poles and the Changing Arctic
The poles, particularly the Arctic, play a crucial role in the planet's functioning as they act as the gearbox of the entire planetary engine. Changes in the ice on the poles not only affect the surface but also have a profound impact on the entire engine that regulates heat distribution. The Arctic is warming at a much faster rate than the rest of the planet, and the loss of ice has significant consequences for the global climate system. Understanding the importance of the poles helps us recognize the need to work with the planet's natural systems rather than against them.
The Impact of Light Absorption in the Ocean
In the deep ocean, light absorbs at different rates, with red light being the first to disappear after around 10 meters. This absorption affects the colors we perceive underwater and can result in photographs appearing washed out and bluish in hue. Additionally, when deep-sea divers cut themselves, their blood can appear green due to the absence of red light and the presence of green pigments in blood. This understanding of light absorption in the ocean highlights how different factors, such as depth and water clarity, impact the visual experience and communication among marine species.
Conflicting Perspectives on Deep Sea Mining
Deep sea mining, particularly for valuable nodules found on the ocean floor, presents a conflict between the potential economic benefits and the environmental risks. While the nodules contain valuable minerals and metals that can potentially be used in sustainable, low-impact industries, the process of mining can have significant negative consequences for deep-sea ecosystems. It raises concerns about the lack of scientific knowledge regarding these fragile environments and the potential disruption to unique species and habitats. The debate surrounding deep-sea mining underscores the need for careful consideration and sustainable practices when engaging in resource extraction activities in the ocean.
Understanding Sea Level Rise and the Importance of Addressing It
Sea level rise is a serious issue that requires urgent attention. While some extreme scenarios suggest a rise of 10 meters before the end of the century, even a rise of just one meter would have significant consequences. The impacts of sea level rise are not uniform, as storms can exacerbate the damage caused by higher sea levels. It is crucial to focus on decarbonizing and reducing emissions as rapidly as possible to mitigate the effects of sea level rise.
The Ocean's Vital Role in Climate Regulation and Biodiversity
The ocean acts as a crucial regulator of Earth's climate, absorbing and storing a significant amount of heat and carbon dioxide. Over 90% of the accumulated energy from climate change ends up in the ocean, particularly in the upper few hundred meters. This accumulation affects the ocean's density and disrupts natural processes, hindering the exchange of nutrients and limiting the transfer of gases between surface and deep waters. Deep-sea mining poses a significant threat to this delicate ecosystem, and the potential destruction of this last great wilderness should be carefully considered.
Helen Czerski is a British physicist, oceanographer, and presenter for the Fully Charged Show. She is known for her expertise in fluid dynamics, particularly her research on the physical properties of bubbles and their impact on various natural phenomena.
Czerski has a strong passion for making complex scientific concepts accessible to the general public and her work has contributed to promoting scientific literacy and fostering curiosity about the natural world. In this episode, she drops in to talk about her new book ‘The Blue Machine’ which has already been featured as Radio 4’s book of the week.
Get the Snipd podcast app
Unlock the knowledge in podcasts with the podcast player of the future.
AI-powered podcast player
Listen to all your favourite podcasts with AI-powered features
Discover highlights
Listen to the best highlights from the podcasts you love and dive into the full episode
Save any moment
Hear something you like? Tap your headphones to save it with AI-generated key takeaways
Share & Export
Send highlights to Twitter, WhatsApp or export them to Notion, Readwise & more
AI-powered podcast player
Listen to all your favourite podcasts with AI-powered features
Discover highlights
Listen to the best highlights from the podcasts you love and dive into the full episode