Loading Downloads
462Episodes
Category: Science

A fun take on the latest science news with enough data to sink your teeth into. Lagrange Point goes beyond the glossy summary and gets in depth with the research from across the world.

September 27, 2021

Episode 450 - Dating lobsters and islands under the sea

Dating lobsters can be tricky and not just because they pinch. We think lobsters can live for decades or centuries, but we can't actually track their age. Just how do you find out a creatures age without dissecting them? Tracking a creatures age is tricky when they cast away alot of signs of physical growth. How can there tightly knit families spread across huge distances in the sea that are somehow connected? How do genetic islands form inside the oceans? What can chaos, larvae and Antarctica tell us about genetic diversity?

  1. Eleanor A. Fairfield, David S. Richardson, Carly L. Daniels, Christopher L. Butler, Ewen Bell, Martin I. Taylor. Ageing European lobsters ( Homarus gammarus ) using DNA methylation of evolutionarily conserved ribosomal DNAEvolutionary Applications, 2021; DOI: 10.1111/eva.13296
  2. David L. J. Vendrami, Lloyd S. Peck, Melody S. Clark, Bjarki Eldon, Michael Meredith, Joseph I. Hoffman. Sweepstake reproductive success and collective dispersal produce chaotic genetic patchiness in a broadcast spawnerScience Advances, 2021; 7 (37) DOI: 10.1126/sciadv.abj4713
September 20, 2021

Episode 449 - Ig nobel ‘21 Part 2- Weaving and colliding in crowds

We celebrate the greatest scientific awards night, the 31st Ig Nobel Prizes. In this multi part special we find out about the history of the Ig Nobel prizes and some of the more well known examples from storied history. Who came home with the top prize this year in the Ig Nobel's? How can you navigate a crowd safely? What's the best way to model a busy train station? Does using a phone make it harder to navigate a crowd safely? Do people coordinate and work together to make through a rush hour crowd? Does a crowd self organise into lanes to navigate a busy intersection?

References:

  1. Physics-based modeling and data representation of pairwise interactions among pedestrians,” Alessandro Corbetta, Jasper A. Meeusen, Chung-min Lee, Roberto Benzi, and Federico Toschi, Physical Review E, vol. 98, no. 062310, 2018.
    WHO TOOK PART IN THE CEREMONY: Alessandro Corbetta, Jasper Meeusen, Chung-min Lee, Roberto Benzi,, Federico Toschi
  2. Mutual Anticipation Can Contribute to Self-Organization in Human Crowds,” Hisashi Murakami, Claudio Feliciani, Yuta Nishiyama, and Katsuhiro Nishinari, Science Advances, vol. 7, no. 12, 2021, p. eabe7758.
September 13, 2021

Episode 448 - Ig Nobel ‘21 Part 1 - Invasion of the chewing gum

We celebrate the greatest scientific awards night, the 31st Ig Nobel Prizes. In this multi part special we find out about the history of the Ig Nobel prizes and some of the more well known examples from storied history. Who came home with the top prize this year in the Ig Nobel's? What's the best way to airlift a rhino? Are there NSFW ways to de-congest your nose? What can a discarded piece of chewing gum tell you about your mouth or environment? A discarded piece of gum can be a mess but also a messy battleground for bacteria. Since bacteria love invading old gum, can that be harnessed for good?

Full information about the Ig Nobel Prizes can be found at their website, curated by the journal, the Annals of Improbable Research. 

References:

  1. Obesity of Politicians and Corruption in Post‐Soviet Countries,” Pavlo Blavatskyy, Economic of Transition and Institutional Change, vol. 29, no. 2, 2021, pp. 343-356.
September 6, 2021

Episode 447 - Defending and recovering from floods in cities and the sea floor

Extreme storms will become more common, so how can cities and the sea bed defend itself. What happens to the sea floor when there is a big storm? How long does the ecosystem on the sea floor take to recover after a large storm. What can be done to protect a coastal city from flooding in extreme weather? Knowing when to batten the hatches and protect a city in an extreme storm requires careful modelling. Venice is a beautiful city, but requires constant defense from damaging flooding and storms. Venice is protected from flooding by MOSE but is there a future where the gates are permanently closed? The complex interaction between sea level rise, Mediterranean and Adriatic seas make protecting the Venetian lagoon tricky.

  1. Piero Lionello, Robert J. Nicholls, Georg Umgiesser, Davide Zanchettin. Venice flooding and sea level: past evolution, present issues, and future projections (introduction to the special issue). Natural Hazards and Earth System Sciences, 2021; 21 (8): 2633 DOI: 10.5194/nhess-21-2633-2021
  2. E. V. Sheehan, L. A. Holmes, B. F. R. Davies, A. Cartwright, A. Rees, M. J. Attrill. Rewilding of Protected Areas Enhances Resilience of Marine Ecosystems to Extreme Climatic Events. Frontiers in Marine Science, 2021; 8 DOI: 10.3389/fmars.2021.671427