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World's first petahertz-speed phototransistor in ambient conditions

Computers and Math from Science Daily Feed - Mon, 05/19/2025 - 5:45pm
Researchers demonstrated a way to to manipulate electrons using pulses of light that last less than a trillionth of a second to record electrons bypassing a physical barrier almost instantaneously -- a feat that redefines the potential limits of computer processing power.
Categories: Science

Investment risk for energy infrastructure construction is highest for nuclear power plants, lowest for solar

Matter and energy from Science Daily Feed - Mon, 05/19/2025 - 5:45pm
The average energy project costs 40% more than expected for construction and takes almost two years longer than planned, finds a new global study. One key insight: The investment risk is highest for nuclear power plant construction and lowest for solar. The researchers analyzed data from 662 energy projects built between 1936 and 2024 in 83 countries, totaling $1.358 trillion in investment.
Categories: Science

Investment risk for energy infrastructure construction is highest for nuclear power plants, lowest for solar

Computers and Math from Science Daily Feed - Mon, 05/19/2025 - 5:45pm
The average energy project costs 40% more than expected for construction and takes almost two years longer than planned, finds a new global study. One key insight: The investment risk is highest for nuclear power plant construction and lowest for solar. The researchers analyzed data from 662 energy projects built between 1936 and 2024 in 83 countries, totaling $1.358 trillion in investment.
Categories: Science

AI doesn't know 'no' – and that's a huge problem for medical bots

New Scientist Feed - Mon, 05/19/2025 - 2:41pm
Many AI models fail to recognise negation words such as “no” and “not”, which means they can’t easily distinguish between medical images labelled as showing a disease and images labelled as not showing the disease
Categories: Science

Planetary Scientists Confirm There's No Flowing Water on Mars

Universe Today Feed - Mon, 05/19/2025 - 12:52pm

It was big news years ago when Mars orbiters found streaks of what appeared to be water running down Martian cliffs and crater walls. Scientists worked hard to figure out what they were. Some proposed that they were seasonal streaks of briny ice, melting as the weak Mars summer arrived. New research says no to that.

Categories: Science

Exoplanet's Companion Found Via Orbital Mechanics Variations

Universe Today Feed - Mon, 05/19/2025 - 11:55am

Tracking exoplanets via orbital mechanics isn't easy. Plenty of variables could affect how a planet moves around its star, and determining which ones affect any given exoplanet requires a lot of data and a lot of modeling. A recent paper from researchers led by Kaviya Parthasarathy from National Tsing Hua University in Taiwan tries to break through the noise and determine what is causing the Transit Timing Variations (TTVs) of HAT-P-12b, more commonly known as Puli.

Categories: Science

New Algorithm Details the Most Extreme Particle Storm Known to Science

Universe Today Feed - Mon, 05/19/2025 - 11:01am

Extreme solar storms are a relatively rare event. However, as more and more of our critical infrastructure moves into space, they will begin to have more and more of an impact on our daily lives, rather than just providing an impressive light show at night. So it's best to know what's coming, and a new paper from an international team of researchers led by Kseniia Golubenko and Ilya Usoskin of the University of Oulu in Finalnd found a massive Extreme Solar Particle Event (ESPE) that happened 12350 years ago, which is now considered to be the most energetic on record.

Categories: Science

Robots learning without us? New study cuts humans from early testing

Matter and energy from Science Daily Feed - Mon, 05/19/2025 - 10:20am
Humans no longer have exclusive control over training social robots to interact effectively, thanks to a new study. The study introduces a new simulation method that lets researchers test their social robots without needing human participants, making research faster and scalable.
Categories: Science

Robots learning without us? New study cuts humans from early testing

Computers and Math from Science Daily Feed - Mon, 05/19/2025 - 10:20am
Humans no longer have exclusive control over training social robots to interact effectively, thanks to a new study. The study introduces a new simulation method that lets researchers test their social robots without needing human participants, making research faster and scalable.
Categories: Science

Using sound to 'see' unexploded munitions on the seafloor

Matter and energy from Science Daily Feed - Mon, 05/19/2025 - 10:20am
More than 400 underwater sites in the United States are potentially contaminated with unexploded ordnance -- weapons that did not explode upon deployment.
Categories: Science

Empowering robots with human-like perception to navigate unwieldy terrain

Computers and Math from Science Daily Feed - Mon, 05/19/2025 - 10:20am
Researchers have developed a novel framework named WildFusion that fuses vision, vibration and touch to enable robots to 'sense' and navigate complex outdoor environments much like humans do.
Categories: Science

Empowering robots with human-like perception to navigate unwieldy terrain

Matter and energy from Science Daily Feed - Mon, 05/19/2025 - 10:20am
Researchers have developed a novel framework named WildFusion that fuses vision, vibration and touch to enable robots to 'sense' and navigate complex outdoor environments much like humans do.
Categories: Science

Not one, but two massive black holes are eating away at this galaxy

Space and time from Science Daily Feed - Mon, 05/19/2025 - 10:20am
Astronomers searching for massive black holes shredding stars found one in an unusual place -- 2,600 light years from the core of a galaxy. The roque black hole may be from an earlier merger with another galaxy, or have been tossed out of the core after interacting with two other black holes. This is the first ever optically discovered off-nuclear tidal disruption event. Eventually, the two could merge and produce ripples of gravitational waves.
Categories: Science

Remotely controlled robots at your fingertips: Enhancing safety in industrial sites

Computers and Math from Science Daily Feed - Mon, 05/19/2025 - 10:18am
A research team has developed a novel haptic device designed to enhance both safety and efficiency for workers in industrial settings.
Categories: Science

Remotely controlled robots at your fingertips: Enhancing safety in industrial sites

Matter and energy from Science Daily Feed - Mon, 05/19/2025 - 10:18am
A research team has developed a novel haptic device designed to enhance both safety and efficiency for workers in industrial settings.
Categories: Science

The invisible order sets the fluctuation in the terahertz region of glass

Matter and energy from Science Daily Feed - Mon, 05/19/2025 - 10:18am
Although glasses exhibit disordered atomic structures, X-ray and neutron scattering reveal a subtle periodicity. Researchers have demonstrated that this hidden periodicity -- referred to as 'invisible order' -- plays a critical role in determining vibrational fluctuations in the terahertz (THz) frequency range, which significantly influence the physical properties of glass.
Categories: Science

Chemists develop compact catenane with tuneable mechanical chirality

Matter and energy from Science Daily Feed - Mon, 05/19/2025 - 10:18am
A team of chemists has made significant strides in the field of mechanically interlocked molecules (MIMs). Their work showcases the development of a compact catenane with tuneable mechanical chirality, offering promising applications in areas such as material science, nanotechnology, and pharmaceuticals.
Categories: Science

Astronomers observe largest ever sample of galaxies up to over 12 billion light years away

Space and time from Science Daily Feed - Mon, 05/19/2025 - 10:17am
The largest sample of galaxy groups ever detected has been presented by a team of international astronomers using data from the James Webb Space telescope (JWST) in an area of the sky called COSMOS Web. The study marks a major milestone in extragalactic astronomy, providing unprecedented insights into the formation and evolution of galaxies and the large-scale structure of the universe.
Categories: Science

Streaked slopes on Mars probably not signs of water flow, study finds

Space and time from Science Daily Feed - Mon, 05/19/2025 - 10:15am
Researchers analyzed a global database of 500,000 strange streaks that occur on steep Martian slopes, concluding that they're most likely caused by dry processes rather than liquid flow.
Categories: Science

Researchers take AI to 'kindergarten' in order to learn more complex tasks

Computers and Math from Science Daily Feed - Mon, 05/19/2025 - 10:15am
We need to learn our letters before we can learn to read and our numbers before we can learn how to add and subtract. The same principles are true with AI, a team of scientists has shown through laboratory experiments and computational modeling. In their work, researchers found that when recurrent neural networks (RNNs) are first trained on simple cognitive tasks, they are better equipped to handle more difficult and complex ones later on.
Categories: Science

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