Hunting squid slowed by rising carbon levels
Wed, 21 Mar 2018 09:47:54 EDT
Scientists have found that high carbon dioxide levels cause squid to bungle attacks on their prey. Investigators said that the oceans absorb more than one-quarter of all the excess carbon dioxide (CO2) released into the atmosphere by humans and this uptake of additional CO2 causes seawater to become more acidic.
New genetic research shows extent of cross-breeding between wild wolves and domestic dogs
Wed, 21 Mar 2018 09:47:45 EDT
An international study has shown that mating between domesticated dogs and wild wolves over hundreds of years has left a genetic mark on the wolf gene pool.
Dinosaur frills and horns did not evolve for species recognition
Wed, 21 Mar 2018 09:26:36 EDT
The elaborate frills and horns of a group of dinosaurs including Triceratops and Styracosaurus did not evolve to help species recognise each other, according to researchers.
How obesity dulls the sense of taste
Tue, 20 Mar 2018 14:13:39 EDT
Previous studies have indicated that weight gain can reduce one's sensitivity to the taste of food. Now a new study shows that inflammation, driven by obesity, actually reduces the number of taste buds on the tongues of mice.
Scientists discern new antibiotics resistance mechanism to peptide antibiotics
Tue, 20 Mar 2018 14:13:29 EDT
In a recent study, a group of scientists reveals both the widespread distribution and broad-spectrum resistance potential of D-stereospecific peptidases, providing a potential early indicator of antibiotic resistance to non-ribosomal peptide antibiotics.
Marine researchers say recent sea star wasting disease epidemic defies prediction
Tue, 20 Mar 2018 14:13:17 EDT
Beginning in 2013, a mysterious disease crippled sea star populations up and down the U.S. west coast. Over a matter of months, many sea star species died in record-breaking numbers, though the ochre sea star was among the hardest hit. Now, researchers have analyzed just how much the populations of this species have declined, but they have not yet determined what factors might be contributing to the epidemic.
Excitations: First steps of photosynthesis
Tue, 20 Mar 2018 12:35:22 EDT
Photosynthesis has driven life on this planet for more than 3 billion years -- first in bacteria, then in plants -- but we don't know exactly how it works.
Natural enemies reduce pesticide use
Tue, 20 Mar 2018 12:35:19 EDT
Crop variety in agriculture has a positive impact on the natural enemies of aphids. Farmers can use this insight to keep aphids at bay and cut down on pesticides.
Even flies like a familiar song
Tue, 20 Mar 2018 10:08:50 EDT
The process that allows sounds experienced during infancy to shape language is poorly understood. Researchers have found that courtship behavior in Drosophila melanogaster can be shaped by earlier auditory experiences. Their findings allowed them to develop a novel and simple neurological model to study how experiences of sound can shape complex modes of communication in animals.
20 percent of Americans responsible for almost half of US food-related greenhouse gas emissions
Tue, 20 Mar 2018 10:08:21 EDT
On any given day, 20 percent of Americans account for nearly half of US diet-related greenhouse gas emissions, and high levels of beef consumption are largely responsible, according to a new study.
Dogs with noise sensitivity should be routinely assessed for pain by vets
Tue, 20 Mar 2018 10:07:19 EDT
Dogs which show fear or anxiety when faced with loud or sudden noises should be routinely assessed for pain by veterinarians, according to new research. Researchers believe that pain, which could be undiagnosed, could be exacerbated when a noise makes the dogs tense up or 'start', putting extra stress on muscles or joints which are already inflamed leading to and associated with a loud or startling noise.
Vegetable compound could have a key role in 'beeting' Alzheimer's disease
Tue, 20 Mar 2018 08:44:14 EDT
A compound in beets that gives the vegetable its distinctive red color could help slow the accumulation of misfolded proteins in the brain, a process associated with Alzheimer's disease. Scientists say this could lead to the development of drugs that could alleviate some of the long-term effects of the disease, the world's leading cause of dementia.
Smoked foods are tastier, less harmful with a tip from the auto industry
Tue, 20 Mar 2018 08:44:09 EDT
Infusing foods with smoke can impart delicious nuanced flavors, but could also come with an unwelcome side of carcinogens. To reduce the carcinogen content of smoked foods, researchers took a lesson from the automobile industry, running the smoke through a zeolite filter to remove harmful compounds. It worked, and with a happy bonus: superior smoke flavor.
Continuously killing bacteria on coated stainless steel -- add bleach to recharge
Tue, 20 Mar 2018 08:44:00 EDT
Stainless steel is the gold standard for kitchen appliances and cookware, but bacteria can grow on these surfaces, contaminating food. Current coatings available on the market are pricey and potentially harmful, so scientists have now developed an affordable specialized polymer coating for such surfaces that they can recharge with bleach treatments.
Tiny gels sop up intestinal toxins
Tue, 20 Mar 2018 08:43:57 EDT
Bacterial infections that target the intestine can cause conditions that range from uncomfortable to deadly. While it's easy to blame the bacteria, it's actually the toxins the bacteria produce that trigger inflammation, diarrhea, fever and cramps. Researchers now report the development of a microgel scavenger that targets toxins instead of bacteria.
Discovered mode of drinking in mosquitoes carries biomedical implications
Tue, 20 Mar 2018 08:43:26 EDT
Mosquitoes may have a reputation for being one of the world's most intractable pests, but they're actually quite tiny and fragile. So when an international team of scientists wanted to observe the underlying mechanisms of how the insects feed, they had to get creative.
Sound new technique tunes into the shifting shapes of biology
Tue, 20 Mar 2018 08:43:13 EDT
Scientists have come up with a novel way of quantifying cell shapes -- with a lot of mathematics and a little musical inspiration.
New deep reef ocean zone, the rariphotic, teeming with new fish species
Tue, 20 Mar 2018 08:43:06 EDT
Diving down below the range of scuba in the Curasub, Smithsonian deep reef explorers discovered a new world where roughly half of the fish had no names. They are calling it the rariphotic.
Natural sniper kills hospital bacterium
Tue, 20 Mar 2018 08:41:17 EDT
Bacteria produce proteins to take out specific competitors. One of these proteins can kill the hospital bacterium Pseudomonas aeruginosa. Microbial geneticists have unraveled how this protein launches its attack and ensures that the bacteria die very quickly. In the long term, these proteins hold potential for new antibiotic cocktails.
Newly described human antibody prevents malaria in mice
Mon, 19 Mar 2018 21:58:40 EDT
Scientists have discovered a human antibody that protected mice from infection with the deadliest malaria parasite, Plasmodium falciparum. The research findings provide the basis for future testing in humans to determine if the antibody can provide short-term protection against malaria, and also may aid in vaccine design. Currently, there is no highly effective, long-lasting vaccine to prevent malaria.