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16 articles from ScienceDaily
Living robots built using frog cells
- ScienceDaily
- 20/1/13 23:56
Scientists repurposed living frog cells -- and assembled them into entirely new life-forms. These tiny 'xenobots' can move toward a target and heal themselves after being cut. These novel living machines are neither a traditional robot nor a known species of animal. They're a new class of artifact: a living, programmable organism.
Connector fungi offer new clues to fate of nitrogen in warming tundra
- ScienceDaily
- 20/1/13 23:56
New research could have implications for researchers and computer models that predict where nitrogen and carbon go at both regional and global levels.
International movements of Atlantic tarpon, need for protection
- ScienceDaily
- 20/1/13 23:56
The results of an 18-year study of Atlantic tarpon revealed that these large silvery fish take extensive seasonal migrations -- 1,000s of kilometers in distance -- beyond US borders.
Connecting the dots in the sky could shed new light on dark matter
- ScienceDaily
- 20/1/13 23:56
Astrophysicists have come a step closer to understanding the origin of a faint glow of gamma rays covering the night sky. They found that this light is brighter in regions that contain a lot of matter and dimmer where matter is sparser -- a correlation that could help them narrow down the properties of exotic astrophysical objects and invisible dark matter.
The advantage of changing sex in fish population recovery
- ScienceDaily
- 20/1/13 23:56
Some fish species recover at different rates when fishing is eliminated inside MPAs. A new study explores how sex-changing fish species can actually recover faster than fixed-sex species.
How nodules stay on top at the bottom of the sea
- ScienceDaily
- 20/1/13 23:56
Rare metallic elements found in clumps on the deep-ocean floor mysteriously remain uncovered despite the shifting sands and sediment many leagues under the sea. Scientists now think they know why, and it could have important implications for mining these metals while preserving the strange fauna at the bottom of the ocean.
Potential new treatment for preventing post traumatic stress disorder
- ScienceDaily
- 20/1/13 22:50
Scientists have discovered the first biomarker unique to PTSD patients and they have created a peptide shown in a preclinical trial to treat and even prevent PTSD.
A controlled phage therapy can target drug-resistant bacteria while sidestepping potential unintended consequences
- ScienceDaily
- 20/1/13 22:50
The fight against drug-resistant pathogens remains an intense one. While the Centers for Disease Control's (CDC) 2019 'biggest threats' report reveals an overall decrease in drug-resistant microbe-related deaths as compared to its previous report (2013) the agency also cautions that new forms of drug-resistant pathogens are still emerging.
Life's clockwork: Scientist shows how molecular engines keep us ticking
- ScienceDaily
- 20/1/13 22:50
In the The Demon in the Machine, physicist Paul Davies argues that what's missing in the definition of life is how biological processes create 'information,' and such information storage is the stuff of life, like person's ability to solve complex problems. Over the past 75 years, scientists have chipped away at this problem without identifying precise details of how any of our enzyme machines...
A single gene for scent reception separates two species of orchid bees
- ScienceDaily
- 20/1/13 21:33
Orchid bees are master perfumers. Males collect chemicals to concoct perfumes unique to their specific species. Researchers link the evolution of sexual signaling in orchid bees to a single gene shaped by species' perfume preferences.
Nanosatellites improve detection of early-season corn nitrogen stress
- ScienceDaily
- 20/1/13 21:33
For corn growers, the decision of when and how much nitrogen fertilizer to apply is a perennial challenge. Scientists have shown that nanosatellites known as CubeSats can detect nitrogen stress early in the season, potentially giving farmers a chance to plan in-season nitrogen fertilizer applications and alleviate nutrient stress for crops.
Artificial muscle sheets transform stem cells into bone
- ScienceDaily
- 20/1/13 21:33
Specifically programmed materials can, under specific conditions, encourage stem cells to transform into bone cells. To do this, scientists implemented a so-called shape-memory polymer in stem cell research.
Long-term memory performance depends upon gating system
- ScienceDaily
- 20/1/13 21:33
Why do we remember some experiences for our entire lives but quickly forget others? The brain is constantly deciding which events are important enough for long-term storage. A new study sheds light on one element of that process.
Mysteries of grasshopper response to gravity unlocked
- ScienceDaily
- 20/1/13 21:33
How do insects control the effects of gravity when they climb a tree or hang upside-down waiting for prey? They don't have closed circulatory systems that restrict fluid flow to certain parts of the body. Researchers discovered how insects adjust their cardiovascular and respiratory activity in response to gravity. When they change orientation, they respond to gravity just like humans, and they...
Genetic anomaly associated with poor response to common asthma treatment
- ScienceDaily
- 20/1/13 21:33
A new study has uncovered a genetic anomaly associated with poor response to a common asthma treatment. The findings showed that asthmatic patients with the gene variant are less likely to respond to glucocorticoids and often develop severe asthma.
Meteorite contains the oldest material on Earth: 7-billion-year-old stardust
- ScienceDaily
- 20/1/13 21:33
Scientists have discovered the oldest solid material on Earth: 7-billion-year-old stardust trapped inside a meteorite. This stardust provides evidence for a 'baby boom' of new stars that formed 7 billion years ago, contrary to thinking that star formation happens at a steady, constant rate.