ScienceDaily: Top Environment News |
- NASA sees second biggest flare of the solar cycle
- Chimpanzees have police officers, too
- Genetic survey of endangered Antarctic blue whales shows surprising diversity
- New species of deep-sea catshark described from the Galapagos
- What have we got in common with a gorilla? Insight into human evolution from gorilla genome sequence
- Deafening affects vocal nerve cells within hours
- A bird's song may teach us about human speech disorders
- Inside the cell nucleus: A foot in the door to genetic information
- Archaea: Crystal structure of archael chromatin clarified
- When it comes to creating wetlands, Mother Nature is in charge
| NASA sees second biggest flare of the solar cycle Posted: 07 Mar 2012 03:51 PM PST The leading edge of the first of two major coronal mass ejections will reach Earth at about 1:25 AM EST on the morning of March 8 (plus or minus 7 hours). Such a CME could result in a severe geomagnetic storm, causing aurora at low latitudes, with possible disruption to high frequency radio communication, global positioning systems (GPS), and power grids.  |
| Chimpanzees have police officers, too Posted: 07 Mar 2012 03:50 PM PST Chimpanzees are interested in social cohesion and have various strategies to guarantee the stability of their group. Anthropologists now reveal that chimpanzees mediate conflicts between other group members, not for their own direct benefit, but rather to preserve the peace within the group. Their impartial intervention in a conflict -- so-called "policing" -- can be regarded as an early evolutionary form of moral behavior.  |
| Genetic survey of endangered Antarctic blue whales shows surprising diversity Posted: 07 Mar 2012 03:49 PM PST More than 99 percent of Antarctic blue whales were killed by commercial whalers during the 20th century, but the first circumpolar genetic study of these critically endangered whales has found a surprisingly high level of diversity among the surviving population of some 2,200 individuals. That may bode well for their future recovery.  |
| New species of deep-sea catshark described from the Galapagos Posted: 07 Mar 2012 11:54 AM PST Scientists conducting deep-sea research in the Galapagos have described a new species of catshark, Bythaelurus giddingsi. The new shark is approximately a foot long and has a chocolate-brown coloration with pale, irregularly distributed spots on its body. The spotted patterns appear to be unique to each individual.  |
| What have we got in common with a gorilla? Insight into human evolution from gorilla genome sequence Posted: 07 Mar 2012 10:22 AM PST Scientists have sequenced the genome of the last great ape to have its genome decoded, the gorilla. This study provides a unique perspective on our own origins and is an important resource for research into human evolution and biology, as well as for gorilla biology and conservation.  |
| Deafening affects vocal nerve cells within hours Posted: 07 Mar 2012 10:22 AM PST Portions of a songbird's brain that control how it sings have been shown to decay within 24 hours of the animal losing its hearing.  |
| A bird's song may teach us about human speech disorders Posted: 07 Mar 2012 06:46 AM PST The song of a small bird is providing valuable insights into human speech and speech disorders. Scientists have now discovered that some 2,000 genes in a brain region of a male bird called the zebra finch are significantly linked to singing. More than 1,500 of these genes in a critical part of the bird's song circuitry are reported for the first time.  |
| Inside the cell nucleus: A foot in the door to genetic information Posted: 07 Mar 2012 06:46 AM PST In the cell nucleus, DNA wraps around what are called histone proteins, forming regularly spaced spherical bodies called nucleosomes. Thus, large portions of the genetic material are inaccessible to the gene reading machinery. Scientists have now simulated at high time resolution how short DNA segments repeatedly detach spontaneously from the nucleosome. The group has been the first to demonstrate that the spool-shaped histone proteins have an active role in opening access to the genetic information.  |
| Archaea: Crystal structure of archael chromatin clarified Posted: 07 Mar 2012 06:41 AM PST Researchers have clarified for the first time how chromatin in archaea, one of the three evolutionary branches of organisms in nature, binds to DNA. The results offer valuable clues into the evolution of chromatin structure in multi-cellular organisms and promise insights into how abnormalities in such structure can contribute to cancers and gene disorders.  |
| When it comes to creating wetlands, Mother Nature is in charge Posted: 07 Mar 2012 06:38 AM PST Fifteen years of studying two experimental wetlands has convinced experts that turning the reins over to Mother Nature makes the most sense when it comes to this area of ecological restoration.  |
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