Search results for airborne sound

Earth Sciences Mar 11, 2024

Satellite measurements show that global carbon emissions are still rising

According to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6), human activities have significantly impacted the planet. As global greenhouse gas emissions (mainly carbon dioxide) have continued ...

Space Exploration Mar 8, 2024

We're working out how to solve crimes in space—the final frontier of forensic science

NASA's Artemis program is scheduled to return astronauts to the moon and establish a permanent orbiting laboratory by the end of the decade.

Environment Feb 6, 2024

Researchers find that dust in the atmosphere is feeding algae in mountain lakes

The world's freshwater systems are in a sort of a climate-change cocktail—rising temperatures, fluctuating levels of environmental acidity and shifting concentrations of dissolved nutrients that settle into the lakes, ponds ...

Materials Science Jan 10, 2024

A magnetically actuated acoustic metamaterial

Space coiling acoustic metamaterials are static and require manual reconfiguration for sound-field modulation. In a new report published in Communications Materials, Christabel Choi, and a team of scientists in computer science ...

Social Sciences Nov 21, 2023

Gaza war: How investigators would go about finding and verifying underground military complexes

Following the raid on the al-Shifa hospital in Gaza by units of the Israel Defence Forces on October 15, the IDF claims to have uncovered evidence of tunnels underneath the hospital. A video released on November 19 showed ...

Space Exploration Nov 13, 2023

China wants to retrieve a sample of Mars by 2028

China continues to take great strides as part of its goal to become a superpower in space and a direct competitor with NASA. In addition to its proposed expansion of the Tiangong space station and the creation of the International ...

Earth Sciences Nov 7, 2023

New date evidence for landslides reveals past Seattle fault earthquakes

New maps of more than 1,000 deep-seated landslides in the Puget Lowlands of Washington State provide evidence of the last major earthquake along the Seattle Fault about 1,100 years ago—and may also hold traces of older ...

Earth Sciences Oct 17, 2023

Could 'marine cloud brightening' reduce coral bleaching on the Great Barrier Reef?

It might sound like science fiction, but "marine cloud brightening" is being seriously considered as a way to shield parts of the ocean from extreme heat.

Environment Sep 26, 2023

As Antarctic sea ice continues its dramatic decline, we need more measurements and much better models

After two seasons of record-breaking lows, Antarctica's sea ice remains in dramatic decline, tracking well below any winter maximum levels observed since satellite monitoring began during the late 1970s.

Environment Aug 31, 2023

Amid new spills and stink, US senators request millions more to fix Tijuana sewage crisis

California's senators are urging Congress for $310 million in new emergency spending to fix the rampant sewage pollution that repeatedly flows from Tijuana to San Diego's South County shoreline.

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