A group of emperor penguins is resting and preening next to a tide crack in the ice near the Gould Bay colony.

First detailed microscopy evidence of bacteria at the lower size limit of life

This cryo-electron tomography image reveals the internal structure of an ultra-small bacteria cell like never before. The cell has a very dense interior compartment and a complex cell wall. The darker spots at each end of the cell are most likely ribosomes. The image was obtained from a 3-D reconstruction. The scale bar is 100 nanometers.Scientists have captured the first detailed microscopy images of ultra-small bacteria that are believed to be about as small as life can get. The research was led by scientists from...

Monster black hole discovered at cosmic dawn

This is an artist's impression of a quasar with a supermassive black hole in the distant universe.Scientists have discovered the brightest quasar in the early universe, powered by the most massive black hole yet known at that time. The international team led by astronomers from Peking...

Modern logging techniques benefit rainforest wildlife

New research has highlighted the value of a modern logging technique for maintaining biodiversity in tropical forests that are used for timber production.

Bumblebees make false memories too

New evidence suggests bumblebees may experience 'confusion' between flower patterns.It's well known that our human memory can fail us. People can be forgetful, and they can sometimes also "remember" things incorrectly, with devastating consequences in the classroom, courtroom, and...

New research signals big future for quantum radar

A prototype quantum radar that has the potential to detect objects which are invisible to conventional systems has been developed by an international research team led by a quantum information...

Interaction of Atlantic and Pacific oscillations caused 'false pause' in warming

The recent slowdown in climate warming is due, at least in part, to natural oscillations in the climate, according to a team of climate scientists, who add that these oscillations...

How were fossil tracks made by Early Triassic swimming reptiles so well preserved?

Tracy J. Thomson stands next to a block with numerous swim tracks in Capitol Reef National Park, Utah.A type of vertebrate trace fossil gaining recognition in the field of paleontology is that made by various tetrapods (four-footed land-living vertebrates) as they traveled through water under buoyant or...

Study affirms role of specialized protein in assuring normal cell development

Scientists at NYU Langone Medical Center and New York University have demonstrated that a specialized DNA-binding protein called CTCF is essential for the precise expression of genes that control the...

How mantis shrimp evolved many shapes with same powerful punch

Mantis shrimp attack their dinners with the help of spring-loaded claws.The miniweight boxing title of the animal world belongs to the mantis shrimp, a cigar-sized crustacean whose front claws can deliver an explosive 60-mile-per-hour blow akin to a bullet leaving...

Sharp rise in experimental animal research in US

The use of animals in experimental research has soared at leading US laboratories in recent years, finds research published online in the Journal of Medical Ethics.

The sun has more impact on the climate in cool periods

The activity of the Sun is an important factor in the complex interaction that controls our climate. New research now shows that the impact of the Sun is not constant over time, but has greater significance when the Earth is...

Life 'not as we know it' possible on Saturn's moon Titan

A new type of methane-based, oxygen-free life form that can metabolize and reproduce similar to life on Earth has been modeled by a team of Cornell University researchers.

New filter could advance terahertz data transmission

University of Utah electrical and computer engineering professor Ajay Nahata, left, and U graduate student Andrew Paulsen hold up a terahertz frequency filter made through a process they developed with an inkjet printer. They have discovered a new approach for designing filters capable of separating different frequencies in the terahertz spectrum, the next generation of communications bandwidth that could allow cell-phone users and Internet surfers to download data a thousand times faster than today.University of Utah engineers have discovered a new approach for designing filters capable of separating different frequencies in the terahertz spectrum, the next generation of communications bandwidth that could allow...

Zombie outbreak? Statistical mechanics reveals the ideal hideout

A team of Cornell University researchers focusing on a fictional zombie outbreak as an approach to disease modeling suggests heading for the hills, in the Rockies, to save your brains...

Embrace unknowns, opt for flexibility in environmental policies

We make hundreds, possibly thousands, of decisions each day without having full knowledge of what will happen next. Life is unpredictable, and we move forward the best we can despite...

Fighting the Colorado potato beetle with RNA interference

Colorado potato beetle (<i>Leptinotarsa decemlineata</i>): On average 40 to 50 cm2 of leaf material are eaten by each of the beetles' larvae. Infestation with Colorado potato beetles can result in crop losses up to 50 percent, if there is no pest control.Colorado potato beetles are a dreaded pest of potatoes all over the world. Since they do not have natural enemies in most potato producing regions, farmers try to control them...

Social circles

If you live in a city, you know that a fair amount of your movement around town is social in nature. But how much, exactly? A new study co-authored by...

A mollusk of a different stripe

The blue-rayed limpet is a tiny mollusk that lives in kelp beds along the coasts of Norway, Iceland, the United Kingdom, Portugal, and the Canary Islands. These diminutive organisms --...

Amphibian chytrid fungus reaches Madagascar

<i>Boophis quasiboehmei</i> is from the Ranomafana National Park in Southeast Madagascar.The chytrid fungus, which is fatal to amphibians, has been detected in Madagascar for the first time. This means that the chytridiomycosis pandemic, which has been largely responsible for the...

New research predicts when, how materials will act

In science, it's commonly known that materials can change in a number of ways when subjected to different temperatures, pressures or other environmental forces.

Malaria plays hide-and-seek with immune system by using long noncoding RNA to switch genes

Breaking the code of malaria parasite's immune evasion: Prof. Ron Dzikowski and Ph.D. student Inbar Amit-Avraham at the Hebrew University of Jerusalem.Up to one million people ¾ mainly pregnant woman and young children ¾ are killed each year by the Plasmodium falciparum parasite, which causes the most devastating form of human...

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