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Male sparrows are less intimidated by the songs of aging rivals

Friday January 17th, 2020 11:21:09 PM
Few singers reach their sunset years with the same voice they had in younger days. Songbirds are no different. New research reveals that elderly swamp sparrows don't sound quite like they used to -- nor do they strike the same fear in other males who may be listening in. Humans are remarkably good at guessing a person's age by their voice. But this is the first time the phenomenon has been demonstrated in wild animals.

Ingestible medical devices can be broken down with light

Friday January 17th, 2020 09:27:07 PM
Engineers have developed a light-sensitive material that allows gastrointestinal devices to be triggered to break down inside the body when they are exposed to light from an ingestible LED.

Walking with atoms: Chemical bond making and breaking recorded in action

Friday January 17th, 2020 09:27:05 PM
Scientists have for the first time captured and filmed atoms bonding together, using advanced microscopy methods they captured a moment that is around half a million times smaller than the width of a human hair.

What is an endangered species?

Friday January 17th, 2020 09:27:00 PM
What makes for an endangered species classification isn't always obvious.

Human fetal lungs harbor a microbiome signature

Friday January 17th, 2020 05:39:00 PM
The lungs and placentas of fetuses in the womb -- as young as 11 weeks after conception -- already show a bacterial microbiome signature, which suggests that bacteria may colonize the lungs well before birth. This first-time finding deepens the mystery of how the microbes or microbial products reach those organs before birth and what role they play in normal lung and immune system development.

Transformational innovation needed to reach global forest restoration goals

Friday January 17th, 2020 05:21:19 PM
New research finds that global South countries have pledged the largest areas of land to forest restoration, and are also farthest behind in meeting their targets due to challenging factors such as population growth, corruption, and deforestation.

Chemists allow boron atoms to migrate

Friday January 17th, 2020 05:21:17 PM
Organic molecules with atoms of the semi-metal boron are important building blocks for synthesis products to produce drugs and agricultural chemicals. However, the conversion of substances commonly used in industry often results in the loss of the valuable boron unit, which can replace another atom in a molecule. Chemists now introduce carbon-carbon couplings in which the boron atom is retained.

Neuron found in mice could have implications for effective diet drugs

Friday January 17th, 2020 05:21:15 PM
A CALCR cell found in mice may stop feeding without subsequential nauseating effects, as well as influence the long term intake of food.

Spider-Man-style robotic graspers defy gravity

Friday January 17th, 2020 05:21:11 PM
Traditional methods of vacuum suction and previous vacuum suction devices cannot maintain suction on rough surfaces due to vacuum leakage, which leads to suction failure. Researchers have developed a zero-pressure difference method to enhance the development of vacuum suction units. Their method overcame leakage limitations by using a high-speed rotating water ring between the surface and suction cup to maintain the vacuum.

Scientists measure the evolving energy of a solar flare's explosive first minutes

Friday January 17th, 2020 05:21:05 PM
In 2017, a massive new region of magnetic field erupted on the sun's surface next to an existing sunspot. The powerful collision of magnetic energy produced a series of solar flares, causing turbulent space weather conditions at Earth. Scientists have now pinpointed for the first time exactly when and where the explosion released the energy that heated spewing plasma to energies equivalent to 1 billion degrees in temperature.

Acid reflux drugs may have negative side effects for breast cancer survivors

Friday January 17th, 2020 04:08:40 PM
Acid reflux drugs that are sometimes recommended to ease stomach problems during cancer treatment may have an unintended side effect: impairment of breast cancer survivors' memory and concentration.

Not all of nature's layered structures are tough as animal shells and antlers

Friday January 17th, 2020 04:08:36 PM
Engineers looking to nature for inspiration have long assumed that layered structures like those found in mollusk shells enhance a material's toughness, but a study shows that's not always the case. The findings may help engineers avoid 'naive biomimicry, the researchers say.

Real risks associated with cannabis exposure during pregnancy

Friday January 17th, 2020 03:47:56 PM
A new study has definitively shown that regular exposure to THC, the main psychoactive ingredient in cannabis, during pregnancy has significant impact on placental and fetal development.

Human ancestors started biodiversity decline millions of years ago

Friday January 17th, 2020 03:47:52 PM
The human-caused biodiversity decline started much earlier than researchers used to believe. According to a new study the process was not started by our own species but by some of our ancestors.

The core of massive dying galaxies already formed 1.5 billion years after the Big Bang

Friday January 17th, 2020 03:47:50 PM
The most distant dying galaxy discovered so far, more massive than our Milky Way -- with more than a trillion stars -- has revealed that the 'cores' of these systems had formed already 1.5 billion years after the Big Bang, about 1 billion years earlier than previous measurements revealed. The discovery will add to our knowledge on the formation of the Universe more generally, and may cause the computer models astronomers use, one of the most fundamental tools, to be revised.

Molecules move faster over rough terrain

Friday January 17th, 2020 03:47:48 PM
Contrary to what one might think, molecules can move faster in the proximity of rougher surfaces.

It takes more than two to tango: Microbial communities influence animal sex and reproduction

Friday January 17th, 2020 03:47:44 PM
It is an awkward idea, but a couple's ability to have kids may partly depend on who else is present. The reproductive tracts of males and females contain whole communities of micro-organisms. These microbes can have considerable impact on (animal) fertility and reproduction. They may even lead to new species.

Activation of a distinct genetic pathway can slow the progress of metastatic breast cancer

Friday January 17th, 2020 03:47:42 PM
Activation of the BMP4 signalling pathway presents a new therapeutic strategy to combat metastatic breast cancer, a disease that has shown no reduction in patient mortality over the past 20 years.

The way you dance is unique, and computers can tell it's you

Friday January 17th, 2020 03:47:40 PM
Nearly everyone responds to music with movement, whether through subtle toe-tapping or an all-out boogie. A recent discovery shows that our dance style is almost always the same, regardless of the type of music, and a computer can identify the dancer with astounding accuracy.

Rich rewards: Scientists reveal ADHD medication's effect on the brain

Friday January 17th, 2020 03:02:57 PM
Researchers have identified how certain areas of the human brain respond to methylphenidate -- a stimulant drug which is used to treat symptoms of ADHD. The work may help researchers understand the precise mechanism of the drug and ultimately develop more targeted medicines for the condition.


 

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Last updated January 15, 2020