Phys.org news
Phys.org / Cell lineage tracing reveals early‑segregated germline in plants
August Weismann's germ plasm theory of the late 19th century posited that only germ cells, e.g., sperm and egg cells in animals or pollen and ovule cells in plants, transmit genetic information to the next generation, and ...
Phys.org / 'Serendipitous' discovery of Martian ripple marks reveals an ancient sandstorm
The search for life on Mars involves the efforts of scientists from many different disciplines. An important aspect of that search is to study Martian sedimentary rocks for information about the planet's environment when ...
Phys.org / Compact flat-lens system can generate nondiffracting bottle beams
Most laser sources produce Gaussian beams that diverge as they propagate. This natural spreading limits their effectiveness in applications that require light to remain concentrated over long distances. To overcome this challenge, ...
Phys.org / Protostars 'sneeze' and produce rings of gas and magnetic flux as they grow
Researchers have uncovered new insights into the early development of baby stars. As published in The Astrophysical Journal Letters, a research team from Kyushu University and Kagawa University reports that during the early ...
Phys.org / Backyard birdwatchers help scientists uncover what hawks really like to eat
Anyone who keeps a bird feeder has likely had the same uneasy thought after seeing a sudden blur of wings in the yard: What was that hawk doing here?
Phys.org / Scientists study radiation limits for safer seafood shipping
Scientists at Florida International University have identified a promising way to safely ship fish long distances without losing vital vitamin D, using a method already widely applied to preserve other foods—gamma irradiation.
Phys.org / Watering smarter, not more: A modern-day robotic divining rod
Advanced technology can help farmers get to the root of a growing problem—overwatering in an era of increasing drought and water scarcity. A new UC Riverside system can map soil moisture tree by tree, so growers water only ...
Phys.org / Rudeness may be rewarded—as a response to rudeness
If you don't have anything nice to say, perhaps it's OK to say it anyway—if responding to someone who has treated you or your team rudely, new Cornell research suggests. Civil responses to disrespectful behavior remain the ...
Phys.org / Tiny frogs prefer concrete apartments over wooden shelters
James Cook University researchers have tested frog housing and nursery preferences in the Wet Tropics rainforest of North Queensland, with frogs finding the thermal regulation of concrete shelters to be the perfect tropical ...
Phys.org / Engineered E. coli dependency may help contain microbes to defined areas
Take a typical fish out of the water and it won't live long. It gets the oxygen it needs from the water it swims in. In a similar way, scientists are exploring dependency as a method of controlling what microbes can do and ...
Phys.org / Male fish lose their learning edge in drug-polluted waters, research reveals
A common antidepressant detected in rivers and streams worldwide is disrupting how fish learn, and the impact is strikingly one-sided. New research led by Monash University shows the drug amitriptyline impairs spatial learning ...
Phys.org / A global carbon credit program risks rewarding the wrong behavior
A United Nations-backed framework for protecting tropical forests could allow governments to collect income from carbon credits without advancing forest conservation. The weakness lies in how the program calculates baselines, ...
