Do aliens use hairspray?

If someone forwarded this newsletter to you, please subscribe. Having trouble reading this email? View it in your browser.  › News   › Dr Karl   › abc.net.au/science Find us on:   Twitter  Facebook  How do you hunt down aliens? Look for signs of industrial pollutants in the atmosphere, say scientists. Of course, they're assuming that alien life forms treat their planets the same way we do. Also this week step back in time to learn about the average dinosaur day, then fast-forward a few million years to meet the ultimate drop-bear — a 70-kilogram tree-wombat that inhabited Australia's forests. And finally, in the lead up to World AIDS Day on 1 December, Brigid Haire argues why people living in high-risk communities should have access to antiretroviral drugs to prevent HIV. Top news stories of the week Researchers ask 'Do aliens use hairspray?' If you want to find advanced aliens civilisations in the universe, look for their greenhouse gas emissions, according to a team of US scientists. Men contribute more than sperm to pregnancy Evidence suggests seminal fluid primes a woman's immune system to be more receptive to the foetus. Study tests whether ants can take the heat Snails show impact of more acidic ocean Ancient tree-wombat behaved like a koala What's new How much evidence do you need to prevent HIV? Opinion | Antiretroviral drugs could help prevent the spread of HIV in high-risk communities, but world authorities have been slow to embrace new HIV prevention strategies outside the research arena, argues Bridget Haire. How many hours were in a dinosaur's day? Ask an Expert | I heard a scientist say that a day was 21 hours long during the time of the dinosaurs. Is this true and if so why? Arctic meltdown not caused by nature Great Moments in Science | Rapid loss of Arctic sea ice - 80 per cent has disappeared since 1980 - is not caused by natural cycles such as changes in the Earth's orbit around the Sun, says Dr Karl. What has NASA discovered on Mars? StarStuff Podcast | NASA downplays talk of a major new discovery on Mars. Also; no atmosphere detected on the Kuiper belts dwarf planet Makemake, and NASA teams up with ESA to power the Orion capsule. Catch up with ABC Radio and TV Listen to more science on Radio National Watch ABC TV science shows on iView    Attitudes to climate change (Science Show)    New approach to measuring response to media (Science Show)    Communication amongst agamid lizards (Science Show)    Zebrafish neural functioning could provide insights into workings of the human brain (Science Show)    Investigating human brain function (Science Show)    Hypnotic delusion (All In The Mind)    Chemotherapy before breast cancer surgery (Health Report)    Science with Chris Smith: Paralysed dogs (Radio National Breakfast)    Australia Wild: Survival on the Reef (ABC iView) ABC Health & Wellbeing Being overweight or obese: what it means for you ABC Environment Peer pressure, peer review and coal seam gas In the Sky this Week, with Ian Musgrave Thursday November 29 to Thursday December 6 The Full Moon is Thursday November 29, at this time there is a penumbral eclipse. Mars is in Sagittarius. Jupiter is visible in the late evening sky and is visited by the Moon on the 29th. Jupiter is at opposition on December 3. In the morning skies Venus is low on the horizon. Saturn is visible low in the morning sky not far from Venus. Mercury is in the morning sky below Venus.  Read more» You are subscribed to the Science Updates newsletter using the email address idouska1.scan@blogger.com Not interested anymore? Unsubscribe instantly. ABC Science Home | About ABC Science | Contact us Australian Broadcasting Corporation, 700 Harris Street, Ultimo NSW 2007 © 2012 ABC | Conditions of Use | Privacy Policy | Discover other ABC email newsletters