- Mars spacecraft, including MAVEN, reveal comet flyby effects on Martian atmosphere
- New Zealand's moa were exterminated by an extremely low-density human population
- The power of the power nap: Scientists uncover secrets of hibernation
Posted: 07 Nov 2014 12:47 PM PST
Two NASA and one European spacecraft have gathered new information about the basic properties of a wayward comet that buzzed by Mars Oct. 19, directly detecting its effects on the Martian atmosphere. Debris from the comet, known officially as Comet C/2013 A1 Siding Spring, caused an intense meteor shower and added a new layer of ions, or charged particles, to the ionosphere.
Posted: 07 Nov 2014 06:16 AM PST
Posted: 07 Nov 2014 06:14 AM PST
For hibernating mammals, the pre-winter months are a race against time to accumulate enough energy reserves to last until spring. Offspring born late in the year have much less time to achieve this. Scientists have now discovered that power-napping can help late-born garden dormice overcome these unfavorable odds. The scientists also found a link between time spent at higher temperatures and aging.
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