News tagged with surveillance

Securing large crowds a 'vexing problem'

Late Monday, an explosion at the end of an Ariana Grande concert at Manchester Arena in England killed 22 people and injured nearly 60 others. The New York Times reported Tuesday that British authorities had identified the ...

date19 hours ago in Security
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US NSA spy agency halts controversial email sweep

The National Security Agency announced Friday it would end its controversial practice of sweeping up any email or text message an American exchanges with someone overseas that makes reference to a real target of NSA surveillance.

dateApr 29, 2017 in Security
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Image: Teide Observatory on Tenerife, Spain

ESA operates its Optical Ground Station (OGS) at the Teide Observatory on Tenerife, Spain, where a Zeiss 1 m-diameter telescope is used to survey and characterise objects near the 'geostationary ring' some 36 000 km above ...

dateApr 14, 2017 in Space Exploration
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