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Can we solve the riddle of the coral reef halos?

Coral reefs worldwide are threatened by a variety of human impacts. Fishing is among the most pressing threats to reefs, because it occurs on most reef systems and fundamentally alters food webs. Meanwhile, observing coral reefs, particularly remote, hard-to-access locations such as the Northwestern Hawaiian Islands (NWHI), remains notoriously difficult and expensive. But a University of Hawai'i (UH) at Mānoa researcher and her collaborators may have found a mysterious natural phenomenon that can help us observe coral reef health from space.

https://phys.org/, posted on 24 April 2019 | 6:00 am

Zoologists discover two new bird species in Indonesia

Zoologists from Trinity College Dublin, working with partners from Halu Oleo University (UHO) and Operation Wallacea, have discovered two beautiful new bird species in the Wakatobi Archipelago of Sulawesi, Indonesia. Details of their discovery—of the Wakatobi white-eye and the Wangi-wangi white-eye—have been published today (April 24) in the Zoological Journal of the Linnean Society, which is the same journal in which Alfred Wallace and Charles Darwin published their game-changing original ideas about speciation in 1858.

https://phys.org/, posted on 24 April 2019 | 1:00 am

Water walking—the new mode of rock skipping

Researchers at Utah State University's Splash Lab discovered a new mode of water surface skipping termed "water walking".

https://phys.org/, posted on 23 April 2019 | 10:24 pm

Carbon dioxide from Silicon Valley affects the chemistry of Monterey Bay

MBARI researchers recently measured high concentrations of carbon dioxide in air blowing out to sea from cities and agricultural areas, including Silicon Valley. In a new paper in PLOS ONE, they calculate that this previously undocumented process could increase the amount of carbon dioxide dissolving into coastal ocean waters by about 20 percent.

https://phys.org/, posted on 23 April 2019 | 10:20 pm

New sensor detects rare metals used in smartphones

A more efficient and cost-effective way to detect lanthanides, the rare earth metals used in smartphones and other technologies, could be possible with a new protein-based sensor that changes its fluorescence when it binds to these metals. A team of researchers from Penn State developed the sensor from a protein they recently described and subsequently used it to explore the biology of bacteria that use lanthanides. A study describing the sensor appears online in the Journal of the American Chemical Society.

https://phys.org/, posted on 23 April 2019 | 10:17 pm

Controlling instabilities gives closer look at chemistry from hypersonic vehicles

While studying the chemical reactions that occur in the flow of gases around a vehicle moving at hypersonic speeds, researchers at the University of Illinois used a less-is-more method to gain greater understanding of the role of chemical reactions in modifying unsteady flows that occur in the hypersonic flow around a double-wedge shape.

https://phys.org/, posted on 23 April 2019 | 10:14 pm

Scientists create international database of women scientists

A database of women scientists that was created a year ago by a team led by a CU School of Medicine postdoctoral fellow has grown to list more than 7,500 women and is featured in an article published today in PLOS Biology.

https://phys.org/, posted on 23 April 2019 | 8:00 pm

Synopsis: Discontinuous Jumps for Superfluid Helium Growth

Experiments show that a superfluid helium film forming on a carbon nanotube grows layer by layer, with one layer fully forming before the next one starts.

[Physics] Published Tue Apr 23, 2019

http://physics.aps.org/, posted on 23 April 2019 | 12:00 pm

Viewpoint: Yes, Sexual Harassment Still Drives Women Out of Physics

Author(s): Julie Libarkin

A survey of female undergraduates in physics found that three quarters of them experience some form of sexual harassment, leaving them alienated from the field.

[Physics 12, 43] Published Mon Apr 22, 2019

http://physics.aps.org/, posted on 22 April 2019 | 12:00 pm

Focus: <i>Video</i>—Tunable Origami

Author(s): David Ehrenstein

A folding pattern produces a metamaterial with properties that can be tuned over a wide range.

[Physics 12, 44] Published Fri Apr 19, 2019

http://physics.aps.org/, posted on 19 April 2019 | 12:00 pm

Synopsis: An Airless Test for 2D Superconductors

Researchers repurpose a scanning tunneling microscope to measure the Meissner effect in 2D films kept under vacuum, allowing for confirmation of superconductivity.

[Physics] Published Thu Apr 18, 2019

http://physics.aps.org/, posted on 18 April 2019 | 12:00 pm

Feature: Arts &amp; Culture: Turbulence in <i>The Starry Night</i>

Researchers analyzing Vincent van Gogh’s The Starry Night show that its swirling structures have turbulent properties matching those observed in the molecular clouds that give birth to stars.

[Physics 12, 45] Published Thu Apr 18, 2019

http://physics.aps.org/, posted on 18 April 2019 | 12:00 pm

Synopsis: Drops Bounce Inside Liquids

Oil drops falling through a layered liquid with ethanol at the top and water at the bottom repeatedly jump inside the fluid.

[Physics] Published Wed Apr 17, 2019

http://physics.aps.org/, posted on 17 April 2019 | 12:00 pm

Don't miss: Kubrick's genius, Haida mythology and the power of emotion

Explore the life and work of director Stanley Kubrick, watch ancient folklore in an endangered language, and discover how emotion shapes the human brain

https://www.newscientist.com/, posted on 16 April 2019 | 8:00 pm

Must we topple Einstein to let physics leap forward again?

Einstein’s genius casts a long shadow over fundamental physics. The documentary Chasing Einstein wonders if reverence for the past is blocking breakthroughs

https://www.newscientist.com/, posted on 16 April 2019 | 8:00 pm

What would happen if you got sucked into a black hole?

From wormhole passages to white hole escape routes, no one knows for certain what lurks beyond a black hole’s event horizon – so choose your own unsettling fate

https://www.newscientist.com/, posted on 16 April 2019 | 8:00 pm

Synopsis: Noise-Induced Transitions in Earth’s Climate

Calculations show that small fluctuations in solar radiation could cause a transition between a warm Earth and an icy Earth.

[Physics] Published Tue Apr 16, 2019

http://physics.aps.org/, posted on 16 April 2019 | 12:00 pm

We could solve the biggest problem in maths in the next decade

Whoever solves the long-standing P versus NP maths problem will win $1 million. Now a poll of computer scientists suggests the solution may be found sooner than expected

https://www.newscientist.com/, posted on 10 April 2019 | 2:00 pm

Hot rubble from volcanoes races over land on a carpet of air bubbles

Clouds of rocks and gas known as pyroclastic flows spew out of volcanoes and race over land at terrifying speeds, skating on an air pocket beneath the rubble

https://www.newscientist.com/, posted on 8 April 2019 | 6:00 pm

Mathematicians have found a new way to multiply two numbers together

The multiplication you learn at school is too slow for computers, so mathematicians are always searching for better methods. Now they have found one

https://www.newscientist.com/, posted on 29 March 2019 | 2:22 pm

Fridges made from plastic crystals could help cut carbon emissions

Cooling devices like refrigerators and air conditioners consume a quarter of the world's electricity, but a plastic-based material could make them much greener

https://www.newscientist.com/, posted on 27 March 2019 | 7:00 pm

Physicists beat Lorentz reciprocity for microwave transmission

New device could boost telecommunications and be adapted for photonics

http://physicsworld.com/cws/channel/news, posted on 22 February 2018 | 3:27 pm

Japan’s SuperKEKB set for first particle collisions

Revamped accelerator will soon be smashing electrons and positrons together

http://physicsworld.com/cws/channel/news, posted on 21 February 2018 | 3:45 pm

Wood-based 'supermaterial' is stronger and tougher than steel

New material is made by compressing treated wood

http://physicsworld.com/cws/channel/news, posted on 21 February 2018 | 3:10 pm

Three photons bind together to make a ‘molecule’ of light

Technique could be used to create quantum-information systems

http://physicsworld.com/cws/channel/news, posted on 20 February 2018 | 5:06 pm

Nuclear excitation by electron capture seen at long last

Breakthrough could lead to new type of energy source

http://physicsworld.com/cws/channel/news, posted on 20 February 2018 | 2:55 pm

Pistachio trees 'talk' to their neighbours, reveals statistical physics

Ising model could account for nut production of pistachio orchards

http://physicsworld.com/cws/channel/news, posted on 19 February 2018 | 4:43 pm

US National Science Foundation clamps down on misconduct

Agency will now require every grantee organization to report cases of sexual harassment

http://physicsworld.com/cws/channel/news, posted on 15 February 2018 | 12:57 pm