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How did bedbugs become a global concern? We examine why their unconventional reproduction methods are so successful, how bedbugs and humans even crossed paths in the first place and what public health has to do with nation building.
Also on the show, we look at why there's no human version of dog food, how conspiracy theories take hold, and the legal wranglings over an old Canadian oil pipeline.
Humans have an outsized impact on the planet: we’ve wreaked havoc on countless ecosystems and one study estimates only 3% of land on Earth remains untouched by our influence. CrowdScience listener Teri has witnessed the harmful effects of development on natural habitats near her home, and wonders whether we can ever function as part of a healthy ecosystem.
We look for answers in Teri’s home state, California. Humans have lived here for over 10,000 years and its first inhabitants formed a connection to their landscape unlike the exploitative approach of many later settlers. Today, the beliefs and traditions of the Karuk Tribe of northern California still emphasise a symbiotic relationship with nature, seeing plants and animals as their relations.
Over the past couple of centuries much of the Karuk’s land has been degraded by mining, the timber industry and the outlawing of traditional burning practices. Tribal members show us how they’re working to try to restore ecological balance.
As for the rest of humanity: can we rein in our destructive relationship to nature; or even have a beneficial effect on our local ecosystems?
Contributors:
Kathy McCovey - Karuk Tribe member and cultural practitioner Dr Steward Pickett - Ecologist, Cary Institute of Ecosystem Studies Bill Tripp - Karuk Tribe member and Director of Natural Resources and Environmental Policy, Karuk Tribe Department of Natural Resources Dr Frank Kanawha Lake - US Forest Service Research Ecologist and Tribal Liaison Will Harling - Co-lead, Western Klamath Restoration Partnership
Presenter: Caroline Steel Producer: Cathy Edwards Editor: Richard Collings Production Co-ordinator: Jonathan Harris Studio Manager: Giles Aspen & Steve Greenwood
(Image: Huckleberries and tanoak acorns gathered near a burn site. Credit: Stormy Staats)
The 2023 Nobel Prize in Physiology or Medicine was awarded to Katalin Karikó and Drew Weismann for their contributions to developing the fundamentals that led to life saving mRNA vaccines. Although funding and support were not always assured on their road to the Nobel, Katalin Karikó tells Roland she used these setbacks to drive her towards success.
On the other side of the coin, allegations of scientific misconduct over bold room temperature superconductivity claims. Earlier this year, eleven authors submitted a paper to Nature. Now, eight of them are calling for a retraction. Science journalist Dan Garisto covers the story.
Also this week, NASA Ames researcher Jacob Kegerreis details how Saturn got its rings. Hint: It’s a smashing story.
And, what is the most fear inducing sound in the world? Lions roaring? Gunshots? According to mammals in South Africa it is the human voice. Fear-ecologist Liana Zanette explains.
Presenter: Roland Pease Producer: Ella Hubber Editor: Martin Smith Production Co-ordinator: Jana Bennett-Holesworth
(Image: Katalin Karikó. Credit: Mark Makela / Getty Images)
How would it feel wake up years later? After the US narrowly avoided a government shutdown, we look at how complicated systems - such as living things - can just press pause.
Could humans ever hibernate like bears and squirrels? Or even like simpler animals that can be revived after 46,000 years.
Also, which way does antimatter fall under gravity? And how might IVF save a functionally extinct species of rhino?
Presenter: Caroline Steel, with Chhavi Sachdev and Philistiah Mwatee. Producer: Alex Mansfield, with Margaret Sessa-Hawkins, Ben Motley and Sophie Ormiston
On his institutional web homepage at the University of California-Los Angeles’s Anderson School of Management, psychologist Hal Hershfield posts one statement in big italic type: “My research asks, ‘How can we help move people from who they are now to who they’ll be in the future in a way that maximizes well-being?”
In this Social Science Bites podcast, Hershfield and interviewer Dave Edmonds discuss what that means in practice, whether in our finances or our families, and how humans can make better decisions. Hershfield’s new book, Your Future Self: How to Make Tomorrow Better Today, offers a popular synthesis of these same questions.
Much of his research centers on this key observation: “humans have this unique ability to engage in what we call ‘mental time travel,’ the ability to project ourselves ahead and look back on the past and even project ourselves ahead and look back on the past while we're doing so. But despite this ability to engage in mental time travel, we don't always do it in a way that affords us the types of benefits that it could.”
Those benefits might include better health from future-looking medical decisions, better wealth thanks to future-looking spending and savings decisions, or greater contentment based on placing current events in a future-looking context. Which begs the question – when is the future?
“The people who think the future starts sooner,” Hershfield explains, “are the ones who are more likely to do things for that future, which in some ways makes sense. It's closer, it's a little more vivid. There's a sort of a clean break between now and it. That said, it is a pretty abstract question. And I think what you're asking about what counts in five years, 10 years, 20 years? That's a deeper question that also needs to be examined.”
Regardless of when someone thinks the future kicks off, people remain acutely aware that time is passing even if for many their actions belie that. Proof of this comes from studies of how individual react when made acutely aware of the advance of time, Hershfield notes. “People place special value on these milestone birthdays and almost use them as an excuse to perform sort of a meaningfulness audit. of their lives, … This is a common finding, we've actually found this in our research, that people are more likely to do these sorts of meaning-making activities as they confront these big milestones. But it's also to some degree represents a break between who you are now and some future person who you will become.”
Hershfield concludes the interview noting how his research has changed him, using the example of how he now makes time when he might be doing professional work to spend with his family. “I want my future self to look back and say, ‘You were there. You were present. You saw those things,’ and not have looked up and said, ‘Shoot, I missed out on that.’ I would say that's the main way that I've really started to shift my thinking from this work.”