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February 27, 2017

Dousing Flames with Low-Frequency Sound Waves

A new type of extinguisher that uses sound waves to put out fires has been built by two engineering students in the US. Both chemical- and water-free, the invention offers a relatively non-destructive method of fire control, which could find applications in fighting small fires in the home, and the researchers now hold a preliminary patent application for their device.

While the concept of using sound waves to extinguish flames is not new, previous attempts to realize the principle – including efforts by teams at West Georgia University and the US Defense Advanced Research Projects Agency (DARPA) – had not been successful.

Undeterred by this, as well as initial [...]

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April 8, 2015

Why Teenagers Are Suing States Over Climate Change

Oral arguments were heard on Tuesday in a long-running lawsuit brought by two teenagers against the state of Oregon. The teens are seeking to force the state to take more aggressive action on climate change and thereby better protect the planet for future generations.

The suit is one of dozens of legal actions and petitions filed in virtually every state, along with federal courts, as part of a campaign spearheaded by the Oregon-based nonprofit Our Children’s Trust. “Our purpose is to protect earth’s natural systems for current and future generations,” the organization declares on its Web site. “We are here to empower and support youth as they stand up for their lawful [...]

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