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Researchers engineer bacteria to turn carbon dioxide into liquid fuel

Researchers engineer bacteria to turn carbon dioxide into liquid fuel

Biology / Biotechnology

created Dec 10, 2009 | popularity 4.7 / 5 (43) | comments 25

(PhysOrg.com) -- The genetically modified cyanobacterium consumes carbon dioxide and produces the liquid fuel isobutanol by using energy from sunlight.


Mars

Life on Mars theory boosted by new methane study

Space & Earth / Space Exploration

created Dec 08, 2009 | popularity 4.9 / 5 (31) | comments 11

Scientists have ruled out the possibility that methane is delivered to Mars by meteorites, raising fresh hopes that the gas might be generated by life on the red planet, in research published tomorrow in Earth an ...


Glitter-sized solar photovoltaics produce competitive results

Glitter-sized solar photovoltaics produce competitive results

Technology / Energy

created Dec 22, 2009 | popularity 4.4 / 5 (32) | comments 0

Sandia National Laboratories scientists have developed tiny glitter-sized photovoltaic cells that could revolutionize the way solar energy is collected and used.


Arctic ice

Study: Earth's polar ice sheets vulnerable to even moderate global warming

Space & Earth / Earth Sciences

created Dec 16, 2009 | popularity 2.8 / 5 (46) | comments 40

A new analysis of the geological record of the Earth's sea level, carried out by scientists at Princeton and Harvard universities and published in the Dec. 16 issue of Nature, employs a novel statistical approa ...


Citrus

Citrus surprise: Vitamin C boosts the reprogramming of adult cells into stem cells

Biology / Cell & Microbiology

created Dec 24, 2009 | popularity 4.8 / 5 (26) | comments 3

Famous for its antioxidant properties and role in tissue repair, vitamin C is touted as beneficial for illnesses ranging from the common cold to cancer and perhaps even for slowing the aging process. Now, ...


Molecular Transistor

Scientists create world's first molecular transistor

Nanotechnology / Nanophysics

created Dec 23, 2009 | popularity 4.9 / 5 (25) | comments 1

A group of scientists has succeeded in creating the first transistor made from a single molecule. The team, which includes researchers from Yale University and the Gwangju Institute of Science and Technology ...


New way to break some of the strongest chemical bonds

New way to break some of the strongest chemical bonds

Chemistry / Materials Science

created Dec 16, 2009 | popularity 4.6 / 5 (24) | comments 0

(PhysOrg.com) -- Scientists at Cornell University in the U.S. have found a new way of breaking two of the strongest chemical bonds, at ambient temperature and pressure, and this breakthrough could lead to ...


A picture shows Tel Aviv's sea front promenade on the Israeli Mediterranean coastline

Mediterranean Sea filled in less than two years: study

Space & Earth / Earth Sciences

created Dec 09, 2009 | popularity 4.7 / 5 (23) | comments 2

The Mediterranean Sea was mostly filled in less than two years in a dramatic flood around 5.33 million years ago in which water poured in from the Atlantic, according to a study published Wednesday.


Scientists Investigate Cause of 'Singing Dunes'

Scientists Investigate Cause of 'Singing Dunes'

Physics / General Physics

created Dec 15, 2009 | popularity 4.4 / 5 (21) | comments 7

(PhysOrg.com) -- In more than 30 locations around the world, the phenomenon of singing sand dunes has intrigued explorers, tourists, and scientists. When an avalanche occurs or even when the sand is pushed ...


New planet discoveries suggest low-mass planets are common around nearby stars

New planet discoveries suggest low-mass planets are common around nearby stars (w/ Video)

Space & Earth / Astronomy

created Dec 14, 2009 | popularity 4.8 / 5 (19) | comments 14

(PhysOrg.com) -- An international team of planet hunters has discovered as many as six low-mass planets around two nearby Sun-like stars, including two "super-Earths" with masses 5 and 7.5 times the mass of ...


Sign language

Sign language puzzle solved

Technology / Computer Sciences

created Dec 15, 2009 | popularity 4.8 / 5 (16) | comments 0

(PhysOrg.com) -- Scientists have known for 40 years that even though it takes longer to use sign language to sign individual words, sentences can be signed, on average, in the same time it takes to say them, ...


Physicists propose quantum entanglement for motion of microscopic objects

Physics / Quantum Physics

created Dec 21, 2009 | popularity 4.5 / 5 (17) | comments 12

Researchers at the California Institute of Technology (Caltech) have proposed a new paradigm that should allow scientists to observe quantum behavior in small mechanical systems.


Tiny whispering gallery

Tiny whispering gallery: Sensor can detect a single nanoparticle and take its measurement

Physics / Optics & Photonics

created Dec 18, 2009 | popularity 4.7 / 5 (16) | comments 0

(PhysOrg.com) -- Nanotechnology has already made it to the shelves of your local pharmacy and grocery: nanoparticles are found in anti-odor socks, makeup, makeup remover, sunscreen, anti-graffiti paint, home ...


Suzaku catches retreat of a black hole's disk

Suzaku catches retreat of a black hole's disk

Space & Earth / Astronomy

created Dec 10, 2009 | popularity 4.5 / 5 (16) | comments 2

(PhysOrg.com) -- Studies of one of the galaxy's most active black-hole binaries reveal a dramatic change that will help scientists better understand how these systems expel fast-moving particle jets.


Computing with a wave of the hand

Computing with a wave of the hand (w/ Video)

Technology / Hi Tech

created Dec 11, 2009 | popularity 4.9 / 5 (14) | comments 7

(PhysOrg.com) -- The iPhone’s familiar touch screen display uses capacitive sensing, where the proximity of a finger disrupts the electrical connection between sensors in the screen. A competing approach, ...