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Cassini's legacy after two decades at Saturn

Scientists on Earth have received the last submission from the Cassini spacecraft. It descended into Saturn’s atmosphere at 122,500 kilometers per hour, which caused it to melt, thereby ensuring that Saturn’s moons Titan and Enceladus would remain protected from possible contamination by any errant Earth microbes. Cassini scientists had considered other options for the spacecraft’s end, including leaving it to float endlessly in space or parking it in orbit around Saturn. But ultimately, they chose to have it descend into Saturn’s atmosphere after deciding the data that could be returned from the descent were more valuable than any further data it might obtain by remaining in space. Scientists will make discoveries from these data for decades to come.

15 Sep 2017

Burying the sky: Turning carbon dioxide into rock

At an Icelandic geothermal power plant, researchers are capturing carbon dioxide and burying it in basalt to keep the greenhouse gas out of the sky. But can this method be scaled up, and work elsewhere, to help meet global climate goals? 

02 Jun 2017

A L'Aquila trigger, seismic gaps and poor construction: What we've learned from the August earthquake in Italy

Seismologists examine what happened during the Aug. 24 earthquake in Rieti and discuss what those findings might mean for the future of this seismically active region. 
20 Nov 2016