ScienceDaily: Top Science News

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• Child born with HIV still in remission after 18 months off treatment
• Coral itself may play important role in regulating local climate: Coral chemicals protect against warming oceans
• Early-life exposure of frogs to herbicide increases mortality from fungal disease
• Plants use sugars to tell the time of day
• Astronomers discover the most distant known galaxy: Galaxy seen as it was just 700 million years after Big Bang
• Older siblings' cells can be passed from female dogs to their puppies in the womb
• The reins of Casimir: Engineered nanostructures could offer way to control quantum effect
• Gilding the gum tree: Scientists strike gold in leaves
• Natural compound can be used for 3-D printing of medical implants
• How did supermassive black holes grow so big?
• Super song learners: Mechanism for improving song learning in juvenile zebra finches uncovered

Child born with HIV still in remission after 18 months off treatment Posted: 23 Oct 2013 03:32 PM PDT A three-year-old Mississippi child born with HIV and treated with a combination of antiviral drugs unusually early continues to do well and remains free of active infection 18 months after all treatment ceased, according to an updated case report.

Coral itself may play important role in regulating local climate: Coral chemicals protect against warming oceans Posted: 23 Oct 2013 01:52 PM PDT Australian marine scientists have found the first evidence that coral itself may play an important role in regulating local climate. They have discovered that the coral animal -- not just its algal symbiont -- makes an important sulfur-based molecule with properties to assist it in many ways, ranging from cellular protection in times of heat stress to local climate cooling by encouraging clouds to form.

Early-life exposure of frogs to herbicide increases mortality from fungal disease Posted: 23 Oct 2013 11:46 AM PDT A new study shows the herbicide atrazine increased mortality from chytridiomycosis, a disease causing worldwide amphibian declines.

Plants use sugars to tell the time of day Posted: 23 Oct 2013 10:18 AM PDT Scientists are studying how plants are able to set and maintain this internal clock. They have found that the sugars produced by plants are key to timekeeping.

Astronomers discover the most distant known galaxy: Galaxy seen as it was just 700 million years after Big Bang Posted: 23 Oct 2013 10:18 AM PDT Astronomers have discovered the most distant galaxy ever found. The galaxy is seen as it was just 700 million years after the Big Bang, when the universe was only about 5 percent of its current age of 13.8 billion years.

Older siblings' cells can be passed from female dogs to their puppies in the womb Posted: 23 Oct 2013 09:56 AM PDT Researchers have found that microchimerism, a condition where some people possess a small number of cells in their bodies that are not genetically their own, can be passed from a female dog to her offspring while they are still in the womb. Microchimerism most often occurs when a mother gives birth to a child. In some cases, cells from that child are left in the mothers' body and continue to live, despite being of a different genetic makeup than surrounding cells. Researchers have identified evidence that those cells can then be passed on to other children the mother may give birth to at a later time.

The reins of Casimir: Engineered nanostructures could offer way to control quantum effect Posted: 23 Oct 2013 09:56 AM PDT You might think that a pair of parallel plates hanging motionless in a vacuum just a fraction of a micrometer away from each other would be like strangers passing in the night -- so close but destined never to meet. Thanks to quantum mechanics, you would be wrong.

Gilding the gum tree: Scientists strike gold in leaves Posted: 23 Oct 2013 07:13 AM PDT Eucalyptus trees -- or gum trees as they are known -- are drawing up gold particles from the earth via their root system and depositing it their leaves and branches.

Natural compound can be used for 3-D printing of medical implants Posted: 23 Oct 2013 07:13 AM PDT Biomedical engineering researchers have discovered that a naturally-occurring compound can be incorporated into three-dimensional printing processes to create medical implants out of non-toxic polymers. The compound is riboflavin, which is better known as vitamin B2.

How did supermassive black holes grow so big? Posted: 23 Oct 2013 06:09 AM PDT Galaxies may look pretty and delicate, with their swirls of stars of many colors -- but don't be fooled. At the heart of every galaxy, including our own Milky Way, lies a supermassive black hole.

Super song learners: Mechanism for improving song learning in juvenile zebra finches uncovered Posted: 23 Oct 2013 06:07 AM PDT Most songbirds learn their songs from an adult model, mostly from the father. However, there are relatively large differences in the accuracy how these songs are copied. Researchers have now found in juvenile zebra finches a possible mechanism that is responsible for the differences in the intensity of song learning. They provided the nerve growth factor "BDNF" to the song control system in the brain. With this treatment the learning ability in juvenile males could be enhanced in such a way that they were able to copy the songs of the father as good as it had been observed in the best learners in a zebra finch nest.

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