Proof of life: Reevaluating oldest known Archean trace fossil for indications of early biology
Symmetry breaking during flapping generates lift
SDO watches giant filament on the Sun
A snaking, extended filament of solar material currently lies on the front of the sun— some 1 million miles across from end to end. Filaments are clouds of solar material suspended above the sun by powerful ...
Scientists uncover the nuclear life of actin
A key building block of life, actin is one of the most abundant and highly conserved proteins in eukaryotic cells.
Cosmologists weigh cosmic filaments and voids
(Phys.org) —Cosmologists have established that much of the stuff of the universe is made of dark matter, a mysterious, invisible substance that can't be directly detected but which exerts a gravitational ...
Study proposes smart sutures with sensors for wounds
Actin cytonauts at play in the cell
A spider web's strength lies in more than its silk
While researchers have long known of the incredible strength of spider silk, the robust nature of the tiny filaments cannot alone explain how webs survive multiple tears and winds that exceed hurricane strength.
Dark matter filament studied in 3-D for the first time
(Phys.org)—Astronomers using the NASA/ESA Hubble Space Telescope have studied a giant filament of dark matter in 3D for the first time. Extending 60 million light-years from one of the most massive galaxy ...
Study shows how DNA finds its match
It's been more than 50 years since James Watson and Francis Crick showed that DNA is a double helix of two strands that complement each other. But how does a short piece of DNA find its match, out of the millions ...
Of bio-hairpins and polymer-spaghetti: A spotlight on how entangled polymers flow and soften
When a basically sturdy material becomes soft and spongy, one usually suspects that it has been damaged in some way. But this is not always the case, especially when it comes to complex fluids and biological ...
CyPhy Works takes wraps off long-endurance UAVs (w/ video)
Nanowires have the power to revolutionize solar energy (w/ video)
(Phys.org) —Capture up to 12 times more light to produce more energy? Nanowires do just that and surpass expectations on solar energy production.
Unlocking long-hidden mechanisms of plant cell division
Along with copying and splitting DNA during division, cells must have a way to break safely into two viable daughter cells, a process called cytokinesis. But the molecular basis of how plant cells accomplish ...