Mitochondria and the origin of eukaryotes
Were organelles a driving force or late addition in the evolution of cells like ours? Enlarge (credit: NIH) For billions of years after the origin of life, the only living things on Earth were tiny, primitive cells resembling.....»»
Rocket Report: Iran reaches orbit; Chinese firm achieves impressive landing test
"Our investors’ continued support is a recognition of our 18 months of hard work." Enlarge / First and second stages of Blue Origin's "New Glenn" test vehicle. (credit: Blue Origin) Welcome to Edition 6.28 of the Rocke.....»»
North China fossils show that eukaryotes first acquired multicellularity 1.63 billion years ago
In a study published in Science Advances, researchers led by Prof. Zhu Maoyan from the Nanjing Institute of Geology and Palaeontology of the Chinese Academy of Sciences have reported their recent discovery of 1.63-billion-year-old multicellular fossi.....»»
Energy supply in human cells is subject to quality control, researchers discover
Researchers at the University Medical Center Göttingen (UMG) have discovered a new quality control mechanism that regulates energy production in human cells. This process takes place in mitochondria, the power plants of the cell......»»
Cryo-microscopy reveals nano-sized copy machine implicated in origin of life
How the intricate molecular machinery of life arose from simple beginnings has been a long-standing question. Several lines of evidence point towards a primordial "RNA world," where an "RNA copy machine" (a so-called replicase) started making copies.....»»
Long COVID: Damaged mitochondria in muscles might be linked to some of the symptoms
It's estimated around 3% of people in the UK experience long COVID—persistent, long-lasting symptoms after a COVID-19 infection......»»
Cellular clean energy: Can mitochondria make more energy without collateral damage?
Is it possible to amp up the energy production of mitochondria without also boosting potentially harmful byproducts? If so, such a method could be used to treat a host of neurodegenerative diseases in which impaired mitochondria are believed to play.....»»
War in Europe is more than 5,000 years old, researchers find
Conflict has existed throughout human history, and it has often been violent. Attacks, assassinations, raids, ambushes, and vendettas feature in archaeological records almost as far back as the origin of humankind itself. But not war......»»
Mammoth rocket stage for Blue Origin New Glenn goes for sideways ride on Space Coast
A first stage of Blue Origin's massive New Glenn rocket became king of the road for a day making a trip from the factory to its launch complex on Wednesday......»»
Astronomers think they finally know origin of enormous “cosmic smoke rings“
Massive stars burn out quickly. When they die, they expel their gas as outflowing winds. Enlarge / Odd radio circles are large enough to contain galaxies in their centers and reach hundreds of thousands of light years across. (c.....»»
Study on lamprey embryos sheds light on the evolutionary origin of vertebrate head
The origin of the vertebrate skull is a topic of much debate among evolutionary biologists. Some believe that the vertebrate head has developed as a result of modification of the segmental elements of the trunk, such as the vertebrae and somites. On.....»»
Space oddity: Uncovering the origin of the universe"s rare radio circles
It's not every day astronomers say, "What is that?" After all, most observed astronomical phenomena are known: stars, planets, black holes and galaxies. But in 2019 the newly completed ASKAP (Australian Square Kilometer Array Pathfinder) telescope pi.....»»
Astronomers observe three iron rings in a planet-forming disk
The origin of Earth and the solar system inspires scientists and the public alike. By studying the present state of our home planet and other objects in the solar system, researchers have developed a detailed picture of the conditions when they evolv.....»»
Fossil birds: Surfaces of cervical vertebrae show conspicuous tubercles that may have served as "internal bony armor"
An international research team has examined unusual skeletal structures of various European bird fossils from the Eocene. The bone surfaces of the approximately 40- to 50-million-year-old cervical vertebrae show conspicuous tubercles, whose origin as.....»»
Magnetic fields in the cosmos: Dark matter could help us discover their origin
The mini-halos of dark matter scattered throughout the cosmos could function as highly sensitive probes of primordial magnetic fields. This is what emerges from a theoretical study conducted by SISSA and published in Physical Review Letters......»»
HKDC1 protein found crucial to maintaining two mitochondria subcellular structures, mitochondria and lysosomes
Just as healthy organs are vital to our well-being, healthy organelles are vital to the proper functioning of the cell. These subcellular structures carry out specific jobs within the cell; for example, mitochondria power the cell, and lysosomes keep.....»»
Geometric origin of intrinsic dark counts in superconducting nanowire single-photon detectors
In a recent leap forward for quantum computing and optical technologies, researchers have uncovered an important aspect of photon detection. Superconducting nanowire single-photon detectors (SNSPDs), pivotal in quantum communication and advanced opti.....»»
Shedding light on the origin of the photovoltaic effect in organic–inorganic perovskites
A team led by RIKEN researchers has investigated how special crystals convert light into electricity. Their findings will help inform efforts to improve their efficiency, which could lead to the crystals being used in solar cells. The study is publis.....»»
French caviar farms look forward to EU label of origin
At a French caviar factory this week, a worker used tiny pliers to carefully line up black sturgeon fish eggs against a ruler......»»
Researchers study a million galaxies to find out how the universe began
A team of researchers has analyzed more than 1 million galaxies to explore the origin of the present-day cosmic structures, as reported in a recent study published in Physical Review D as an Editors' Suggestion......»»
Study: “Smarter” dogs think more like humans to overcome their biases
Both the shape of a dog's head and cognitive ability determine degree of spatial bias. Enlarge / Look at this very good boy taking a test to determine the origin of his spatial bias for a study on how dogs think. (credit: Eniko K.....»»