Science On Top

Hosts: Ed Brown, Dr. Shayne Joseph, Lucas Randall.

Topics covered:

Nanotech turns plants into common plastic, subdermal implants delivering medications, a satellite-terminator that destroys obsolete or dead satellites, and the mutant genes in your genome. Low-oxygen environments during pregnancy can predispose a baby to heart disease, Venus' surprising slowing rotation, and an update on the faster-than-light neutrinos.

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday.

Topics covered:

New supercontinent 'Amasia' to form in 100 million years, and the Zebra's peculiar stripes may ward off dangerous flies. The physiological effects of massage have been studied, and reveal unexpected gene expression. Fasting mice have a better chance of beating cancer, and climate change could be affecting microbial life in Antarctica.

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday, Lucas Randall.

Topics covered:

Russian scientists drill through 4km of ice to a 20 million year old pristine lake. The controversial bacteria and arsenic story from 2010 is back, this time with a new experiment showing different results. Gene expression in astronauts may be altered by zero-gravity, according to levitating fruit-flies. US Scientists are calling for a tax on sugar, saying it's as dangerous and addictive as tobacco or alcohol. And Australian scientists want to use the DNA from three parents, to reduce the risk of inheriting diseases.

Hosts: Ed Brown, Penny Dumsday, Tom Sidwell, Dr. Paul Willis.

Topics covered:

How long does it take for a mouse-sized animal to evolve to the size of an elephant? Should Australia introduce elephants to reduce bushfires? Analysis of an Archaeopteryx feather reveals the early bird had black plumage. The first human trials of embryonic stem cells suggests the procedure is safe could treat eye disease. Coral from the Great Barrier Reef is being frozen, in an effort to store a genetic record of the reef's diveristy. Studying the brains of people tripping on magic mushrooms could provide clues to new anti-depression drugs. Genetic factors only account for about a quarter of the changes in intelligence over our lives.

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday, Lucas Randall.

Topics covered:

Research linking HRT to cancer contains many faults, rising carbon dioxide levels are affecting fish brains, multicellular life evolves in a laboratory. Scientists create the world's smallest ear, experts divided about adding leap seconds, the Tasmanian Tiger is definitely extinct.

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday, Kylie Sturgess.

Topics covered:

Chinese hangover treatment offers hope for alcohol antidote, warmer nests mean smarter lizards, and mantra rays could be at risk of extinction because of non-traditional traditional chinese medicine. The giant Galapagos Tortoise could be brought back from the brink of extinction, a lost collection of fossils collected by Darwin has been found and what you should and shouldn't be critical of with science journalism.

Hosts: Ed Brown, Dr. Shayne Joseph, Lucas Randall.

Topics covered:

Octopuses edit their RNA to beat the cold, dogs can follow a human's gaze, NASA investigating bacteria-fueled micro-robots, supersoldier ants, communication disadvantages of text compared to speech, and a new estimation of exoplanets indicates they are remarkably common.

Hosts: Ed Brown, Dr. Shayne Joseph, Lucas Randall, Adam vanLangenberg.

Topics covered:

NASA's GRAIL probes in orbit around the moon, hybrid sharks found off the coast of Australia, and can top violinists tell the difference between a US$1 million Stradivarius and a more modern concert-grade violin? Water can determine the spiciness of chillis, due to an evolutionary trade-off.

Adam vanLangenberg is a high school maths teacher and writes for Subterranean Death Cult, a new pop culture blog. He was recently profiled for an article in The Age, about the Skeptical Society he's started at his school.

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday, Lucas Randall.

Topics covered:

Mitochondria - the 'power-plants' inside cells - might be ancient parasites. Body hair may help us spot parasites, and tiny hairs on spiders help them hear. There could be large oceans of liquid water deep underground on Mars, and more than half of all Australian men diagnosed with cancer have turned to 'alternate' medicine.

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday, Lucas Randall.

Topics covered:

Study shows rats have empathy, helping other rats escape. Carbon sequestration is likely to be too costly to combat climate change. Doctors take a stand against chiropractors - and is this the age of superstition? CERN calls a press conference and doesn't tell us very much. And the fossilised remains of a scary pre-cambrian superpredator is found with remarkable eyes.