20 Dec 2025
All stories — Page 31
20 Dec 2025
20 Dec 2025
Why Rechargeable Batteries Lose Performance
Researchers found that repeated charging and discharging makes batteries expand and contract, causing tiny shape changes and stress. This “chemomechanical degradation” and spreading strain reduce performance and shorten battery life, and imaging revealed how it happens.
20 Dec 2025
Astronomers image two collisions at Fomalhaut
Astronomers imaged the dusty aftermath of two collisions between large bodies around the nearby young star Fomalhaut, the first such images beyond the solar system. Teams will track the expanding dust with Hubble and the James Webb Space Telescope.
20 Dec 2025
Luciano Huck criticised over request to 'clean up' Indigenous culture
A behind-the-scenes clip from Luciano Huck's TV shoot at Parque Indígena do Xingu went viral. Indigenous organisations criticised his request to remove visible phones and 'clean up' culture, saying technology is a right and part of daily life.
20 Dec 2025
Which childhood food allergies are outgrown?
Many children outgrow milk and egg allergies, while peanut, tree nut, sesame and shellfish allergies often persist. Factors such as IgE levels, allergy severity and genetics affect whether a child becomes tolerant and which treatments help.
20 Dec 2025
New ultrasound method improves diagnosis of breast masses
Researchers developed a new ultrasound signal-processing method that distinguishes fluid cysts from solid breast masses. In initial patient tests doctors identified masses correctly far more often than with conventional ultrasound, which could reduce biopsies and follow-ups.
20 Dec 2025
20 Dec 2025
19 Dec 2025
Power crisis in the Dominican Republic despite rising renewables
The Dominican Republic increased renewable energy to 25% but grid problems and a brief shutdown at Punta Catalina 2 caused a supply crisis. The president declared an emergency and signed a decree to speed up procurement.
19 Dec 2025
18 Dec 2025