Rare wetland plant found in Arizona now listed as endangered

A rare plant that depends on wetlands for survival is now on the federal endangered species list, a designation that environmentalists say will boost efforts to protect the last free-flowing river in the desert Southwest.

Researchers simulate bubble collapse near oscillating walls

Bubble dynamics plays a significant role in mechanics, chemistry, medicine, and biology. Understanding their interactions with the surrounding walls of the container is crucial for numerous applications, including cavitation ...

US spy master courts top hackers at Def Con

US spy master Keith Alexander on Friday courted hackers at an infamous Def Con gathering rife with software tricksters wary of police and ferociously protective of privacy.

How often do stars explode as exceptionally bright supernovae?

It is not yet clear what gives rise to supernovae with a peak brightness many times the average, so-called superluminous supernovae (SLSNe), but since they are observable from further away than normal supernovae, a better ...

Hackers attack Italian cyber police website

Hacker groups LulzSec and Anonymous announced on Monday that they had hacked into the website of Italy's cyber police and published classified information online in an attack dubbed "Operation Italy".

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