Science On Top

Science On Top

By The Science on Top TeamScienceNatural Sciences
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Science On Top episodes

  • SoT 212: Plants Can Count

    The seventh period on the periodic table is now complete, after four new elements have been officially verified. Elements with atomic numbers 113, 115, atomic numbers 113, 115, 117 and 118 have been confirmed and will get permanent names soon.

    The irukandji jellyfish - actually a number of species of jellyfish - are the most venomous box jellyfish in the world. A leading researcher has now warned that the jellyfish, usually found in the warmer northern waters of Australia, are being found further and further south. He says that as climate change continues to warm the waters, they will become common place on southern Queensland beaches within a decade.

    Two leading astronomers have presented evidence that the solar system may have a ninth planet - and it's definitely not Pluto! Caltech astronomers Mike Brown and Konstatin Batygin believe the planet may be nearly as big as Neptune and never comes closer than 29 billion kilometers to the sun!

    We have a lot more respect for Venus flytraps now that we've learnt they can count!

    KIC 8462852, the strange star with bizarre random dips in brightness that some have suggested could be an alien megastructure just got a little weirder. The most likely explanation was a huge family of comets orbiting the star, but a new study of thousands of observations makes that less likely still.

    30 min
  • SoT Special 19 - Robin Ince

    Robin Ince is a celebrated British comedian. He has built his career mixing science and comedy, on television, radio, podcasts and in his stand-up routines. He's perhaps most famous as a co-host with astrophysicist Brian Cox on BBC4's Infinite Monkey Cage radio show and podcast.Ed managed to sit down with Robin in April last year, to discuss all things comedy and science. From raising sceptical and scientifically literate children, to whether science can bring happiness!

    34 min
  • SoT Bloopers 2015

    Just a note to let you know that our 2015 bloopers episode is now out! It's a lot of fun, so you should definitely listen!

    To do that you'll have to download it from http://scienceontop.com/bloopers2015 or listen to it on our website, YouTube or Soundcloud.

    0 min
  • SoT 211: Our Favourite Science Stories of 2015

    Our top stories of the year.

    Good science:

    Eighty children get chickenpox at Brunswick North West Primary, a school that calls for 'tolerance' of vaccine dodgers

    The Vaccine Lunacy - Disneyland, Measles and Madness

    NASA is now "pretty sure" those weird white patches on Ceres are salt

    Earth Stole Water and More from the Young Moon

    New Horizons: Pluto may have ice volcanoes

    Stem cell treatment halts MS progression in 91% of patients

    A Vomiting Machine Shows How Viruses Spread in Puke

    Children exposed to 4 key bacteria are less likely to develop asthma, study finds

    Viruses join fight against harmful bacteria

    Bad science:

    No woman 'totally straight', study says

    No need for men to get flush-faced about faeces in beards

    So processed meat has been classified as carcinogenic. Here’s what you need to know.

    Flawed study overstates link between fluoride and ill health: experts

    49 min
  • SoT 210: Tarantula Blue

    Fast Radio Bursts are sudden, very short but very intense blasts of radio waves that have so far defied explanation. But now the most detailed study so far has provided some clues to the origins of FRBs - they MIGHT come from starquakes. Probably not aliens.

    While bees are certainly the most efficient pollinators, a new study suggests that other insects - like flies, wasps, beetles and butterflies - are just as important for the success of the world's crops. It's like having a backup plan for bees.

    There are around 900 species of tarantula, and most of them are the usual black or brown colour. But there's more than a few of them have vibrant blue colourings - and we don't really know why.

    An international team of scientists has found that the development of agriculture in Europe - around 8,500 years ago - signalled the start of some significant changes in the DNA of modern humans. There were changes in height, digestion, immune system and skin colour and a host of other evolutionary steps.

    33 min
  • SoT 209: Silly Season For Worms

    Chinese scientists have found bacteria that are resistant to one the 'last resort' antibiotics. The gene for this resistance has been found in 15 percent of meat samples and can spread to other bacteria very easily.

    Biologists at Tufts University have induced flatworms to grow the heads and brains of other flatworm species, without altering the worm's genome.

    Researchers have sequenced the genome of the tardigrade, or 'water bear'. This tiny but nearly indestructible creature has the most foreign genes of any animal studied so far - roughly one sixth of it's genome comes from other species.

    23 min
  • SoT 208: Better Than Hookworm

    For the first time, neurosurgeons at in Canada claim to have found a way to deliver chemotherapy drugs directly to the brain, crossing the famed blood brain barrier.

    Women infected with hookworms seem to have decreased fertility, while women with roundworms seem to be more fertile. Because parasitic worms are weird.

    There's some growing evidence that suggest repeated vaccination against different flu strains might diminish the flu vaccine’s effectiveness. You should still get the shot, though.

    Compass is a clinical trial comparing 2.5 -yearly Pap test screening with 5- yearly Human Papillomavirus (HPV) screening. It is the first large scale clinical trial internationally to assess these screening tests in an HPV vaccinated population. 

    31 min
  • SoT 207: Plutology

    A study of 345 women by The University of Essex concludes that no woman is"totally straight". Well, it's a bit more complicated than that.

    In Australia, forty volunteers are about to have hookworms injected into their bodies to see if a radical treatment can alleviate some of the symptoms of coeliac disease.

    Two possible ice volcanoes have been identified on the surface of Pluto thanks to New Horizons' study of the minor dwarf planet. Instead of molten rock, these volcanoes would eject slushies of water ice and nitrogen, ammonia or methane.

    Scientists may have solved a long-standing mystery about moon rocks, and why they have a lot less volatile elements like potassium, sodium, and zinc than rocks on the Earth.

    Dr. Cassandra Perryman is a psychologist at University of Queensland, and you can follow her on Facebook here.

    29 min
  • SoT 206: Jellies All Day Long

    The first case of a human falling ill from cancer cells contracted from a parasitic tapeworm has been reported in Columbia.

    And in an unrelated story, a Californian man has had a live tapeworm removed from his brain in a potentially life-saving operation.

    The Rosetta probe orbiting 67P/Churyumov–Gerasimenko has surprised everyone by detecting large amounts of molecular oxygen on the comet. The finding suggests molecular oxygen was present when the comet was formed soon after the birth of the solar system, 4.6 billion years ago.

    Stanford University researchers have discovered how jellyfish actually swim – and it's not how previously thought. They make a region of low pressure ahead of themselves, essentially sucking themselves forward. Lucas mentions Smarter Every Day's video of a balloon in a car.

    28 min
  • SoT 205: Excited About Herpes!

    The World Health Organisation has officially classified processed meat as "carcinogenic", and red meat as "probably carcinogenic". However, this doesn't really tell you anything about the level of risk associated with meat. You're probably fine.

    Electric eels can deliver a strong shock, but they can deliver twice the shock by curling around and trapping their victim between head and tail.

    The US Food and Drug Administration has approved an impressive new kind of treatment to help combat skin cancer: herpes. That's right, herpes.

     

    28 min

About Science On Top

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The Australian podcast about science, health and technology news. Join Ed Brown and his panel of co-hosts each week as we talk about the latest and coolest research and discoveries in the world of…