Distinguishing males from females among king penguins
It is difficult to distinguish males from females among King Penguins, but a new study reveals that King Penguins can be sexed with an accuracy of 100% based on the sex-specific syllable pattern of their vocalizations. Using the beak length, King Penguin individuals can be sexed with an accuracy of 79%.
Cryptic New Species of Shark Identified: Atlantic Sixgill Shark
An international team of marine biologists from the United States and Belize has confirmed that sixgill sharks residing in the Atlantic Ocean are a different species than their counterparts in the Indian and Pacific oceans. The team’s findings were published online this month in the journal Marine Biodiversity. The sixgill sharks of the genus Hexanchus [...]
Researchers Find Previously Unknown Structure in Human Spermatozoon Tails
By using cryo-electron tomography, an international team of scientists has identified a completely new nanostructure — named the Tail Axoneme Intra-Lumenal Spiral (TAILS) — inside human spermatozoon tails. A highly effective tail is needed in order for a sperm to be able to swim, and for an egg to be fertilized. The tail is a [...]
LiDAR Survey Reveals Numerous Ancient Maya Structures in Guatemalan Jungle
An ambitious LiDAR (light detection and ranging) survey of forested areas in Guatemala has revealed more than 60,000 previously undetected ancient structures, including isolated houses, large palaces, ceremonial centers, and stone pyramids. LiDAR technology is able to pierce through thick forest canopy and map features on the Earth’s surface. The maps can often reveal changes [...]
Microscale thermophoresis to characterize hits from high-throughput screening
A new article details how the European Lead Factory (ELF), a large publicly accessible drug discovery platform, uses microscale thermophoresis (MST) to aid in the prioritization of small molecule hits from high-throughput screening.
Some black holes erase your past
Physicists insist on determinism: your past and present determine your future uniquely, per Einstein's equations of general relativity. They call this strong cosmic censorship. A mathematician found some types of black holes -- charged, non-rotating objects in an expanding universe -- that allow an observer inside the black hole to travel across a horizon into a place where the past is obliterated and there are an infinite number of possible futures for every initial state.
Are flamingos returning to Florida?
Flamingos are a Florida cultural icon, and sightings in the state have been on the rise in recent decades. However, whether they're truly native to the US or only arrive via escape from captivity has long been subject to debate, making developing a plan for managing Florida's flamingo population challenging. A new study reviews the evidence and provides a fresh argument that the birds should be considered part of the Sunshine State's native fauna.
Long incubation times may defend birds against parasites
Some tropical birds have longer egg incubation times than their temperate cousins, even though their habitat is teeming with egg-eating predators. The reason why has long been a mystery, but a new study applies new methods to confirm the evidence for an old hypothesis -- that a longer development period leads to a stronger, more efficient immune system.
Solar radiation mineralizes terrestrial dissolved organic carbon in the ocean
Organic carbon dissolved in water plays a vital role in the Earth's carbon cycle. Understanding carbon cycling is central to understanding climate change and how aquatic communities are structured and supported. Scientists have found out that solar radiation mineralizes more terrestrial dissolved organic carbon in the ocean than in the inland waters.
Animal study shows how to retrain the immune system to ease food allergies
Treating food allergies might be a simple matter of teaching the immune system a new trick, researchers have found. In a study using mice bred to have peanut allergies, the researchers were able to reprogram the animals' immune systems using a nanoparticle delivery of molecules to the lymph nodes that switched off the life-threatening reactions to peanut exposures.
Fertility study finds hormone that could support early pregnancy
Scientists have identified a hormone that could help prepare the womb lining for pregnancy, research shows.
Watching too much television could cause fatal blood clots
Spending too much time in front of the television could increase your chance of developing potentially fatal blood clots known as venous thrombosis. Even trying to counterbalance hours of TV watching through adequate exercise is not effective warn researchers.
How the brain tells our limbs apart
Researchers use cutting-edge technologies to uncover differences in neural control for arms and legs.
Fur real: Scientists improve computer rendering of animal fur
The next computer-generated animals in King Kong or The Lion King could look a lot more realistic thanks to a breakthrough by computer scientists. The researchers developed a method that dramatically improves the way computers simulate fur, and more specifically, the way light bounces within an animal's pelt.
The conflict between males and females could replace the evolution of new species
New research shows that males and females of the same species can evolve to be so different that they prevent other species from evolving or colonizing habitats, challenging long-held theories on the way natural selection drives the evolution of biodiversity.
Minimising risks of transplants
A bone marrow transplant is often the only therapy available to save leukaemia patients, but the risk of complications is high. Nearly half of all patients experience an unwanted reaction of their immune system, which often attacks their skin and liver and in up to 50 percent of cases the intestines. Researchers have succeeded in deciphering what causes this in some instances life-threatening inflammation of the intestines.
Haloperidol does not prevent delirium or improve survival rates in ICU patients
Prophylactic use of the drug haloperidol does not help to prevent delirium in intensive care patients or improve their chances of survival. Therefore, there is no reason anymore to administer the drug as a preventive measure to reduce the burden of delirium. This was revealed following a three-year, large-scale study among 1,800 patients in 20 Dutch ICUs.
Microscopic solution prevents tip of scanning tunneling microscope from hitting surface
Researchers believe they have addressed a long-standing problem troubling scientists and engineers for more than 35 years: How to prevent the tip of a scanning tunneling microscope from crashing into the surface of a material during imaging or lithography.
Scientists create 'Evolutionwatch' for plants
Added: 21.02.2018 17:26 | 0 views | 0 comments
Added: 21.02.2018 17:26 | 0 views | 0 comments
Using a hitchhiking weed, scientists reveal for the first time the mutation rate of a plant growing in the wild.
Brain liquefaction after stroke is toxic to surviving brain
Researchers suggest liquefied brain fluid may be one cause of dementia after stroke.
Top science news
New Candidates Emerge for Trump’s Top Environmental Adviser
A new candidate was needed after the White House withdrew its previous nominee, who had drawn criticism for calling carbon dioxide the “gas of life.”