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30 articles from PhysOrg

Fermilab achieves world-record field strength for accelerator magnet

To build the next generation of powerful proton accelerators, scientists need the strongest magnets possible to steer particles close to the speed of light around a ring. For a given ring size, the higher the beam's energy, the stronger the accelerator's magnets need to be to keep the beam on course.

NASA estimates Hurricane Dorian's massive rainfall track

On Monday morning, September 9, Hurricane Dorian was a post-tropical storm after a mid-latitude weather front and cold seas had altered its tropical characteristics over the weekend. NASA compiled data on Hurricane Dorian and created a map that showed the heavy rainfall totals it left in its wake from the Bahamas to Canada.

'Superblocks' model could prevent almost 700 premature deaths every year in Barcelona

The city of Barcelona could prevent 667 premature deaths every year by implementing the proposed "Superblocks" project in its entirety. This result would be achieved mainly as a result of decreased air pollution (NO2), but reductions in traffic noise and mitigation of heat island effects would also be contributing factors. These were some of the conclusions of a recent study published in...

To reduce pollution, policymakers should broaden focus beyond smokestacks

Emissions from air pollutants are associated with premature mortality. Between 2008 and 2014, air pollution health damage from fine particulate matter exposure fell by 20 percent in the United States. There are four sectors in the U.S. economy that together are responsible for over 75 percent of air pollution damage but contribute less than 20 percent to national GDP: agriculture, utilities,...

Building blocks of bird babble identified

A new study by an international team headed by the University of Zurich sheds light on whether animal vocalizations, like human words, are constructed from smaller building blocks. By analyzing calls of the Australian chestnut-crowned babbler, the researchers have for the first time identified the meaning-generating building blocks of a non-human communication system.

New models suggest Titan lakes are explosion craters

Using radar data from NASA's Cassini spacecraft, recently published research presents a new scenario to explain why some methane-filled lakes on Saturn's moon Titan are surrounded by steep rims that reach hundreds of feet high. The models suggests that explosions of warming nitrogen created basins in the moon's crust.

Ages of the Navajo Sandstone

The real Jurassic Park was as an ancient landscape home to a vast desert covered mostly in sand dunes as far as the eye could see, where dinosaurs and small mammals roamed southern Utah. The Navajo Sandstone is known for its beautiful red and tan crossbedded sandstones that grace many of the national parks and monuments in the southwest USA—for example Arches, Canyonlands, Capitol Reef, and Zion...

Lack of reporting on phosphorus supply chain dangerous for global food security

Our global food production system uses 53 million tonnes of phosphate fertilizers annually, processed from 270 million tonnes of mined phosphate rock. Estimates show up to 90% phosphate loss from mine to fork. A considerable part of this loss is phosphate pollution in water, some of which creates "dead zones," areas where little or no marine life can survive. With an increase in food demand by 60%...

Making and controlling crystals of light

Optical microresonators convert laser light into ultrashort pulses travelling around the resonator's circumference. These pulses, called "dissipative Kerr solitons," can propagate in the microresonator maintaining their shape.

China Sky Eye, the world's largest single-dish radio telescope, is now fully operational

China's Five-hundred-meter Aperture Spherical Radio Telescope, known as FAST, is the world's most sensitive listening device. The single-dish radio telescope is made of 4,450 individual panels that scan the sky, detecting the universe's whispers and shouts. It's cradled in a natural Earth depression the size of 30 soccer fields. It has more than twice the collecting area of the world's previous...