How to stay cool in a heat wave even without air conditioning
Heat can be dangerous, but health experts say there are ways to manage the threat. O recorte ajuda a contextualizar a pauta dentro de Agro.
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Sound waves reconstruct Alaska fireball path after cameras miss key details
When a bright fireball streaked across the Alaska sky last spring, the usual tools scientists rely on to track such events—cameras and satellites—did not provide a detailed picture. But the meteoroid left behind something else: low-frequency sound waves that traveled hundreds of
Tens of millions swelter as heat wave blasts US
Tens of millions of Americans sweltered under furnace-like temperatures Tuesday as central and eastern cities hunkered down for a heat wave set to last through the July 4 holiday weekend.
Country diary: A story of water pollution, told in seaweed | Sara Hudston
Charmouth, Dorset: On a busy beach day, I find bright green gutweed thriving by the river mouth. It’s resilient – and loves the nutrients found in sewageCharmouth beach is always busy. Even on grey and stormy winter days, walkers and their dogs patrol the hissing waves, and fossi
Scientists fear seabird die-off as El Niño looms: ‘We don’t know how bad this will get’
Many seabirds are starving to death as a marine heat wave lingers off California and fish seek deeper, cooler watersWithin minutes of walking on a San Diego beach, marine ornithologist Tammy Russell found the feathered carcasses – one after another.Some were mixed in with washed
Portugal braces for high temperatures in new heat wave
Parts of Portugal, including the Lisbon region, will be placed on red alert after being relatively spared from Europe's worst heat wave, which set records in several countries.
Acceptor molecule upconverts low-energy green light to high-energy purple with high effici
Solar cells and photocatalysts can be surprisingly inefficient. Despite light consisting of many wavelengths, the range that even highly efficient devices use is limited. Other wavelengths, especially long wavelengths, simply pass through the material without being used as energy
Hidden for decades, hospital superbug built resistance in waves, peaking in the mid‑2000s
Decades-old hospital samples have helped University of East Anglia (UEA) researchers uncover how a deadly antibiotic-resistant "superbug" quietly tightened its grip across the globe. It lurked in hospital corridors for decades, largely unnoticed by the wider public.
390 gravitational wave detections reveal hidden population of black holes
Astronomers have released the largest gravitational wave catalog ever, revealing 161 new black hole collisions and pushing the total number of detections to 390. Among the highlights are the clearest gravitational wave signal ever recorded, the most accurate location of a black h
Tiny magnetic waves could unlock quantum computers the size of a penny
A major breakthrough in quantum technology has turned magnons, tiny magnetic waves once considered too short-lived for practical use, into promising carriers of quantum information. Researchers extended their lifetime by nearly 100 times, reaching up to 18 microseconds, and disco
A strange LIGO signal could reveal the missing link behind dark matter
An unusual gravitational wave signal has renewed hopes that primordial black holes, long considered purely theoretical, may finally be within reach of discovery. If confirmed, they could solve one of astronomy's greatest mysteries by explaining the nature of dark matter.
Weatherwatch: How thunder is made
Sound of thunder varies depending on distance of listener from lightning as atmosphere muffles and absorbs sound A bolt of lightning heats the air almost instantly to as high as 30,000C, causing explosive expansion and a supersonic shock wave that becomes thunder. What that thund