Category Archives: Science

Top New Science Podcasts: Universities Post-Covid And Drones Fighting Mosquito-Borne Disease

science-magazine-podcastsSenior Correspondent Jeffrey Mervis joins host Sarah Crespi to talk about how universities are dealing with the financial crunch brought on by the coronavirus. Jeff discusses how big research universities are balancing their budgets as federal grants continue to flow, but endowments are down and so is the promise of state funding.

Mosquito-borne infections like Zika, dengue, malaria, and chikungunya cause millions of deaths each year. Nicole Culbert and colleges write this week in Science Robotics about a new way to deal with deadly mosquitoes—using drones. The drones are designed to drop hundreds of thousands of sterile male mosquitoes in areas with high risk of mosquito-borne illness. The idea is that sterile male mosquitoes will mate with females and the females then lay infertile eggs, which causes the population to decline. They found this drone-based approach is cheaper and more efficient than other methods of releasing sterile mosquitoes and does not have the problems associated with pesticide-based eradication efforts such as resistance and off-target effects.

Top New Science Podcasts: Tougher Diamonds, Whale Hideouts & Ancient Incest

Nature PodcastsThis week, researchers make diamonds tough, and evidence of incest in a 5,000 year old tomb.

In this episode:

00:51 Tough versus hard

Diamonds are famed for their hardness, but they are not so resistant to fracture. Now, researchers have toughened up diamonds, which could open up new industrial applications. Research Article: Yue et al.

06:07 Research Highlights

A spacecraft helps physicists work out the lifespan of a neutron, and the icy hideaway of an endangered whale. Research Highlight: The vanishing-neutron mystery might be cracked by a robot in outer spaceResearch Highlight: A secluded icy fortress shelters rare whales

08:33 Ancient inbreeding

Analysis of the genomes of humans buried in an ancient Irish tomb has uncovered many surprises, including evidence of incest amongst the elite. Research Article: Cassidy et al.News and Views: Incest uncovered at the elite prehistoric Newgrange monument in Ireland

21:13 #ShutdownSTEM

Nature reporter Nidhi Subbaraman joins us to talk about the #ShutdownSTEM movement, and anti-black racism in academia. Editorial: Note from the editors: Nature joins #ShutDownSTEMNews: Grieving and frustrated: Black scientists call out racism in the wake of police killingsNews: Thousands of scientists worldwide to go on strike for Black livesNews: How #BlackInTheIvory put a spotlight on racism in academia

Top New Science Podcasts: “Neutron Star Interior Composition Explorer”

Nature PodcastsAn instrument on the International Space Station is providing new insights into some of the Universe’s most baffling objects. Neutron stars have puzzled scientists for decades. It’s known that these ultra-dense objects are born from the remnants of supernovae, yet what’s under their surface, and what processes that go on within them, remain a mystery.

Now, an instrument called the Neutron Star Interior Composition Explorer is providing new information to help answer these questions, ushering in a new era of research into these strange stars.

This is an audio version of our feature: The golden age of neutron-star physics has arrived

New Science Podcasts: Coronavirus Contact Tracing Apps, Sea Otters

science-magazine-podcastsStaff Writer Kelly Servick joins host Sarah Crespi to talk about the ins and outs of coronavirus contact tracing apps—what they do, how they work, and how to calculate whether they are crushing the curve. 

Edward Gregr, a postdoctoral fellow at the Institute for Resources, Environment, and Sustainability at the University of British Columbia, Vancouver, talks with Sarah about the controversial reintroduction of sea otters to the Northern Pacific Ocean—their home for centuries, before the fur trade nearly wiped out the apex predator in the late 1800s. Gregr brings a unique cost-benefit perspective to his analysis, and finds many trade-offs with economic implications for fisheries For example, sea otters eat shellfish like urchins and crabs, depressing the shellfishing industry; but their diet encourages the growth of kelp forests, which in turn provide a habitat for economically important finfish, like salmon and rockfish.

Top New Science Podcasts: Quantum States In Space Lab, Barcode Bacteria

nature-podcastsThis week, the spaceborne lab that allows investigation of quantum states, and the debate surrounding how mountain height is maintained.

In this episode:

01:18 Space lab

Scientists have built a lab on the international space station, allowing them to remotely investigate quantum phenomena in microgravity. Research Article: Aveline et al.News and Views: Quantum matter orbits Earth

08:37 Research Highlights

Trackable ‘barcode’ bacteria, and physicists simulate near light speed cycling. Research Highlight: ‘Barcode’ microbes could help to trace goods — from lettuce to loafersResearch Highlight: What Einstein’s theory means for a cyclist moving at almost light speed

10:48 Maintaining mountain height

For a long time many researchers have thought that mainly erosion controls the height of mountains, but new research suggests that tectonic forces play a bigger role. Research Article: Dielforder et al.News and Views: Mountain height might be controlled by tectonic force, rather than erosion

16:12 Pick of the Briefing

We pick our highlights from the Nature Briefing, including how sleep deprivation kills, and a monumental Maya structure hidden in plain sight. Quanta Magazine: Why Sleep Deprivation KillsNational…

Technologies: New Plant-Based Plastics & Waste Plastic Into Hydrogen

Plastic has become a malevolent symbol of our wasteful society. It’s also one of the most successful materials ever invented: it’s cheap, durable, flexible, waterproof, versatile, lightweight, protective and hygienic.

During the coronavirus pandemic, plastic visors, goggles, gloves and aprons have been fundamental for protecting healthcare workers from the virus. But what about the effects on the environment of throwing away huge numbers of single-use medical protection equipment? How are we to balance our need for plastic with protecting the environment?

Delayed as a result of the pandemic, the film is being released now because it considers how society might ‘reset the clock’ when it comes to living better with a vital material.

We hear how Cambridge University’s Cambridge Creative Circular Plastics Centre (CirPlas) aims to eliminate plastic waste by combining blue-sky thinking with practical measures – from turning waste plastic into hydrogen fuel, to manufacturing more sustainable materials, to driving innovations in plastic recycling in a circular economy.

“As a chemist I look at plastic and I see an extremely useful material that is rich in chemicals and energy – a material that shouldn’t end up in landfills and pollute the environment,” says Professor Erwin Reisner, who leads CirPlas, funded by UK Research and Innovation.

“Plastic is an example of how we must find ways to use resources without irreversibly changing the planet for future generations.”

Explore more: CirPlas: https://www.energy.cam.ac.uk/Plastic_…

 

Top New Science Podcasts: Higher Covid-19 Severity In Men, Bacteria Tracking

science-magazine-podcastsFirst up this week, Staff Writer Meredith Wadman talks with host Sarah Crespi about how male sex hormones may play a role in higher levels of severe coronavirus infections in men. New support for this idea comes from a study showing high levels of male pattern baldness in hospitalized COVID-19 patients.

Next, Jason Qian, a Ph.D. student in the systems biology department at Harvard Medical School, joins Sarah to talk about an object-tracking system that uses bacterial spores engineered with unique DNA barcodes. The inactivated spores can be sprayed on anything from lettuce, to wood, to sand and later be scraped off and read out using a CRISPR-based detection system. Spraying these DNA-based identifiers on such things as vegetables could help trace foodborne illnesses back to their source. Read a related commentary piece.