Referral Banners

Saturday, October 4, 2014

ScienceDaily: Top Science News

ScienceDaily: Top Science News

Making oxygen before life: Oxygen can form directly from carbon dioxide in upper atmosphere

Posted: 03 Oct 2014 06:22 AM PDT

About one-fifth of the Earth's atmosphere is oxygen, pumped out by green plants as a result of photosynthesis and used by most living things on the planet to keep our metabolisms running. Scientists have now shown that oxygen can be formed directly from carbon dioxide in the upper atmosphere, changing models of how the atmosphere evolved early in Earth's history.

Batteries included: A solar cell that stores its own power

Posted: 03 Oct 2014 03:43 AM PDT

Is it a solar cell? Or a rechargeable battery? Actually, the patent-pending device is both: the world's first solar battery. Scientists have succeeding in combining a battery and a solar cell into one hybrid device.

Second case of apparent HIV 'cure' in baby followed by reappearance of virus

Posted: 02 Oct 2014 07:11 PM PDT

A new case report is the second report of apparent viral remission followed by rebound in a baby given early ART treatment, after the case of the 'Mississippi baby' received widespread attention in the last year.

Boosting biofuel: Yeast made to tolerate high levels of ethanol, making them more productive

Posted: 02 Oct 2014 11:18 AM PDT

Yeast are commonly used to transform corn and other plant materials into biofuels such as ethanol. However, large concentrations of ethanol can be toxic to yeast, which has limited the production capacity of many yeast strains used in industry.

Previously unseen details of seafloor exposed in new map

Posted: 02 Oct 2014 11:18 AM PDT

A new map of the world's seafloor has been created. Twice as accurate as the previous version, the new map features a much more vivid picture of seafloor structures, including thousands of previously uncharted mountains.

HIV pandemic's origins located

Posted: 02 Oct 2014 11:17 AM PDT

The present HIV pandemic almost certainly originated in Kinshasa, the capital of the Democratic Republic of the Congo, according to a new study. An international team of scientists reconstructed the genetic history of the HIV-1 group M pandemic, which saw HIV spread across Africa and around the world. Their analysis suggests that the common ancestor of group M is likely to have emerged in Kinshasa around 1920.

Elusive particle that is its own antiparticle observed

Posted: 02 Oct 2014 11:17 AM PDT

Scientists have observed an exotic particle that behaves simultaneously like matter and antimatter, a feat of math and engineering that could yield powerful computers based on quantum mechanics.

Study of mountain lion energetics shows the power of the pounce

Posted: 02 Oct 2014 11:17 AM PDT

High-tech collars enabled scientists to record the energetics of mountain lion hunting behavior, showing why cats use "stalk and pounce" and how they overpower large prey.

Insect diversification: Metamorphosing insects biggest contributors to insect evolution

Posted: 02 Oct 2014 11:17 AM PDT

Two new datasets on insect evolution have compiled by biologists, revealing that metamorphosing insects diversify more quickly than other insects and are therefore the biggest contributors to the evolution of insect diversity.

At dusk and dawn: Scientists pinpoint biological clock's synchronicity

Posted: 30 Sep 2014 11:34 AM PDT

Scientists have uncovered how pacemaker neurons are synchronized at dusk and dawn in order to maintain the proper functioning of their biological clocks. Their findings enhance our understanding of how sleep-wake cycles are regulated and offer promise for addressing related afflictions.

No comments: