ScienceDaily: Top Science News

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• Could new flu spark global flu pandemic? New bird flu strain seen adapting to mammals, humans
• Arctic nearly free of summer sea ice during first half of 21st century, experts predict
• Scientists map elusive 3-D structure of telomerase enzyme, key actor in cancer, aging
• Reactivating memories during sleep: Memory rehearsal during sleep can make a big difference in remembering later
• Alternative way to explain life's complexity proposed
• Carbon dioxide removal can lower costs of climate protection

Could new flu spark global flu pandemic? New bird flu strain seen adapting to mammals, humans Posted: 12 Apr 2013 04:24 PM PDT A genetic analysis of the avian flu virus responsible for at least nine human deaths in China portrays a virus evolving to adapt to human cells, raising concern about its potential to spark a new global flu pandemic.

Arctic nearly free of summer sea ice during first half of 21st century, experts predict Posted: 12 Apr 2013 11:28 AM PDT For scientists studying summer sea ice in the Arctic, it's not a question of "if" there will be nearly ice-free summers, but "when." And two scientists say that "when" is sooner than many thought -- before 2050 and possibly within the next decade or two.

Scientists map elusive 3-D structure of telomerase enzyme, key actor in cancer, aging Posted: 12 Apr 2013 10:24 AM PDT Like finally seeing the gears of a watch and how they work together, all components of an entire telomerase enzyme complex have been positioned into a three-dimensional structure for the first time. This first complete visual map of the telomerase enzyme complex, known to play a significant role in cancer and aging, is a breakthrough from biochemists.

Reactivating memories during sleep: Memory rehearsal during sleep can make a big difference in remembering later Posted: 12 Apr 2013 10:24 AM PDT Why do some memories last a lifetime while others disappear quickly? A new study suggests that memories rehearsed, during sleep or waking, can have an impact on memory consolidation and on what is remembered later. A new study shows that when the information that makes up a memory has a high value, the memory is more likely to be rehearsed and consolidated during sleep and remembered later.

Alternative way to explain life's complexity proposed Posted: 12 Apr 2013 10:24 AM PDT Evolution skeptics argue that some biological structures, like the eye, are too complex for natural selection to explain. Biologists have proposed various ways that so-called "irreducibly complex" structures could emerge incrementally over time. But a new study proposes an alternative route.

Carbon dioxide removal can lower costs of climate protection Posted: 12 Apr 2013 10:24 AM PDT Directly removing carbon dioxide from the air has the potential to alter the costs of climate change mitigation. It could allow prolonging greenhouse-gas emissions from sectors like transport that are difficult, thus expensive, to turn away from using fossil fuels. And it may help to constrain the financial burden on future generations, a new study shows.

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