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Jellyfish fluorescence shines new light on DNA copying

Plants & Animals - 星期二, 06/27/2017 - 22:53
Scientists have used florescent proteins from jellyfish to help shed new light on how DNA replicates.
分类: ScienceDaily

Woodrats can't stomach favorite foods at high temps

Plants & Animals - 星期二, 06/27/2017 - 22:53
But the woodrats' unique adaptation that allows them to break down creosote toxins may be in jeopardy if temperatures continue to rise. A new study explains why: Livers of mammals (including us) may be less efficient at breaking down toxins at higher temperatures.
分类: ScienceDaily

Legal cannabis laws impact teen use

Plants & Animals - 星期二, 06/27/2017 - 22:53
A new study has found that adolescents living in medical marijuana states with a plethora of dispensaries are more likely to have tried new methods of cannabis use, such as edibles and vaping, at a younger age than those living in states with fewer dispensaries.
分类: ScienceDaily

Blue-winged Amazon: A new parrot species from the Yucatán Peninsula

Plants & Animals - 星期二, 06/27/2017 - 19:36
In 2014, during a visit to a remote part of the Yucatán Peninsula in Mexico, an ornithologist came across parrots with a completely different color pattern from other known species. A new study names these birds as a new species based on its distinctive shape, color pattern, call and behavior.
分类: ScienceDaily

Could humans ever regenerate a heart? A new study suggests the answer is 'yes'

Plants & Animals - 星期二, 06/27/2017 - 07:06
A new study's findings point to potential for tweaking communication between human genes and advancing our ability to treat heart conditions and stimulate regenerative healing.
分类: ScienceDaily

Could this strategy bring high-speed communications to the deep sea?

Earth & Climate - 星期二, 06/27/2017 - 06:10
A new strategy for sending acoustic waves through water could potentially open up the world of high-speed communications to divers, marine research vessels, remote ocean monitors, deep sea robots, and submarines. By taking advantage of the dynamic rotation generated as the acoustic wave travels, also known as its orbital angular momentum, researchers were able to pack more channels onto a single frequency, effectively increasing the amount of information capable of being transmitted.
分类: ScienceDaily

Tracking bacterial movement between humans, animals key to understanding antibiotic resistance

Plants & Animals - 星期二, 06/27/2017 - 06:09
In a new study, researchers treated bacteria the way they would any ecosystem, using genomic "tags" to track bacterial transmission.
分类: ScienceDaily

Hunting microbes or smelling poison: A matter of evolution

Plants & Animals - 星期二, 06/27/2017 - 06:09
Mammals possess several lines of defense against microbes. One of them is activated when receptors called Fprs, which are present on immune cells, bind to specific molecules that are linked to pathogens. Researchers showed in 2009 that these same receptors were also present in the nose of mice, probably to detect contaminated food or to avoid sick conspecifics. The biologists now describe how Fprs have acquired this olfactory role during rodent evolution, moving from the immune system to a neuronal system.
分类: ScienceDaily

Collapse of European ice sheet caused chaos in past

Earth & Climate - 星期二, 06/27/2017 - 06:05
Scientists have reconstructed in detail the collapse of the Eurasian ice sheet at the end of the last ice age. The big melt wreaked havoc across the European continent, driving home the original Brexit 10,000 years ago.
分类: ScienceDaily

Team launches 'comb and copter' system to map atmospheric gases

Earth & Climate - 星期二, 06/27/2017 - 03:57
Researchers have demonstrated a new mobile, ground-based system that could scan and map atmospheric gas plumes over kilometer distances.
分类: ScienceDaily

New research could help humans see what nature hides

Plants & Animals - 星期二, 06/27/2017 - 03:57
Things are not always as they appear. New visual perception research explains the natural limits of what humans can see and how to find what nature hides.
分类: ScienceDaily

Animals, not drought, shaped our ancestors' environment

Earth & Climate - 星期二, 06/27/2017 - 03:57
The expansion of grasslands isn't solely due to drought, but more complex climate factors are at work, both for modern Africans now and ancient Africans in the Pleistocene, suggests new research.
分类: ScienceDaily

Animals, not drought, shaped our ancestors' environment

Plants & Animals - 星期二, 06/27/2017 - 03:57
The expansion of grasslands isn't solely due to drought, but more complex climate factors are at work, both for modern Africans now and ancient Africans in the Pleistocene, suggests new research.
分类: ScienceDaily

Microbe mystery solved: What happened to the Deepwater Horizon oil plume?

Earth & Climate - 星期二, 06/27/2017 - 03:57
The Deepwater Horizon oil spill in the Gulf of Mexico in 2010 is one of the most studied spills in history, yet scientists haven't agreed on the role of microbes in eating up the oil. Now a research team has identified all of the principal oil-degrading bacteria as well as their mechanisms for chewing up the many different components that make up the released crude oil.
分类: ScienceDaily

Microbe mystery solved: What happened to the Deepwater Horizon oil plume?

Plants & Animals - 星期二, 06/27/2017 - 03:57
The Deepwater Horizon oil spill in the Gulf of Mexico in 2010 is one of the most studied spills in history, yet scientists haven't agreed on the role of microbes in eating up the oil. Now a research team has identified all of the principal oil-degrading bacteria as well as their mechanisms for chewing up the many different components that make up the released crude oil.
分类: ScienceDaily

Why social isolation can bring a greater risk of illness

Plants & Animals - 星期二, 06/27/2017 - 03:57
Social isolation in the fruit fly Drosophila melanogaster, leads to sleep loss, which in turn leads to cellular stress and the activation of a defense mechanism called the unfolded protein response.
分类: ScienceDaily

Chimpanzee 'super strength' and what it might mean in human muscle evolution

Plants & Animals - 星期二, 06/27/2017 - 03:57
For years, anecdotes and some studies have suggested that chimpanzees are 'super strong' compared to humans, implying that their muscle fibers are superior to humans'. Now a research team reports that contrary to this belief, chimp muscles' maximum dynamic force and power output is just about 1.35 times higher than human muscle of similar size, a difference they call 'modest' compared with historical, popular accounts of chimp 'super strength,' being many times stronger than humans.
分类: ScienceDaily

Heightened risk in rice? Researchers discover the toxicity of thioarsenates for plants

Plants & Animals - 星期二, 06/27/2017 - 02:22
Rice is a staple food in many regions of the world, however it sometimes contains levels of arsenic that are hazardous to our health. An interdisciplinary team of researchers has now discovered that there are arsenic compounds which have a toxic effect on plants and yet had not previously been considered in connection with chemical analyses of rice and the estimated health risks for humans. The research concerns thioarsenates, compounds made up of arsenic and sulphur, which may be present in rice fields more often than previously assumed.
分类: ScienceDaily

A little place for my stuff: How big bacteria can grow depends on how much fat they can make

Plants & Animals - 星期二, 06/27/2017 - 01:57
Just as people endlessly calculate how to upsize or downsize, bacteria continually adjust their volume (their stuff) to fit inside their membrane (their space). But what limits their expansion? The answer will surprise you.
分类: ScienceDaily

Air pollution casts shadow over solar energy production

Earth & Climate - 星期二, 06/27/2017 - 01:57
Global solar energy production is taking a major hit due to air pollution and dust. The first study of its kind shows airborne particles and their accumulation on solar cells is cutting energy output by more than 25 percent in certain parts of the world. The regions hardest hit are also those investing the most in solar energy installations -- China, India and the Arabian Peninsula.
分类: ScienceDaily
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