First-time direct proof of chemical reactions in particulates

Researchers at the Paul Scherrer Institute PSI have developed a new method to analyse particulate matter more precisely than ever before. Using it, they disproved an established doctrine: that molecules in aerosols undergo ...

A fundamental shortcoming in air pollution models

Researchers from the University of Copenhagen have discovered a surprising phenomenon in a process by which certain gas molecules produce harmful particles. The impact of this phenomenon is likely to increase in urban areas ...

Breaking waves propel ancient molecules into the air

A discovery that helps explain how organic matter produced by life thousands of years ago is ultimately removed from the sea has been published in Science Advances by Steven Beaupré of Stony Brook University's School of ...

Video: Flying under Aeolus

Following the launch of Aeolus on 22 August 2018, scientists have been busy fine-tuning and calibrating this latest Earth Explorer satellite. Aeolus carries a revolutionary instrument, which comprises a powerful laser, a ...

Building code debate heats up as Australia swelters

In the wake of Australia sweltering through its hottest two months on record – December and January –University of South Australia academics are calling for urgent changes to the country's building codes.

World-first firing of air-breathing electric thruster

In a world first, an ESA-led team has built and fired an electric thruster to ingest scarce air molecules from the top of the atmosphere for propellant, opening the way to satellites flying in very low orbits for years on ...

Energy team develops processes to ramp up bio-based aviation fuel

Airplanes zoom overhead, wispy-white contrails streaming behind them. The Federal Aviation Administration (FAA) handled 43,684 flights, on average, every day last year, and U.S. military and commercial flights together used ...

A levitated nanosphere as an ultra-sensitive sensor

Sensitive sensors must be isolated from their environment as much as possible to avoid disturbances. Scientists at ETH Zurich have now demonstrated how to remove from and add elementary charges to a nanosphere that can be ...

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