ScienceDaily: Top Environment News |
- Catching solar particles infiltrating Earth's atmosphere
- Chemical substitution: On early Earth, iron may have performed magnesium's RNA folding job
- Wildfire and an example of its important link to the ecosystem
- Life scientists view biodiversity through a whole new dimension: Body size, feeding rates
- Vertebrates share ancient neural circuitry for complex social behaviors, biologists find
- Sex: It's a good thing, study of primroses shows
- Geoengineering for global warming: Increasing aerosols in atmosphere would make sky whiter
- Mystery of monarch butterfly migration takes new turn
- 'Like a jet through solid rock:' Volcanic arc fed by rapid fluid pulses
| Catching solar particles infiltrating Earth's atmosphere Posted: 31 May 2012 05:09 PM PDT On May 17, 2012, an M-class flare exploded from the sun. They caused a shower of particles to cascade down toward Earth's surface. The shower created what's called a ground level enhancement (GLE). |
| Chemical substitution: On early Earth, iron may have performed magnesium's RNA folding job Posted: 31 May 2012 05:09 PM PDT Researchers have used experiments and numerical calculations to show that iron, in the absence of oxygen, can substitute for magnesium in RNA binding, folding and catalysis. The findings suggest that three billion years ago, on the early Earth, iron did the chemical work now done by magnesium. |
| Wildfire and an example of its important link to the ecosystem Posted: 31 May 2012 01:56 PM PDT A dilemma is smouldering -- even as wildfires top the current headlines. New research highlights the practice of aggressive fire suppression by using studies at Lake Tahoe as an active example. |
| Life scientists view biodiversity through a whole new dimension: Body size, feeding rates Posted: 31 May 2012 01:00 PM PDT How can blue whales, the largest animals on the planet, survive by feeding on krill, shrimp-like creatures that are the size of a penny? According to life scientists, it's all a matter of dimensions. |
| Vertebrates share ancient neural circuitry for complex social behaviors, biologists find Posted: 31 May 2012 11:57 AM PDT Humans, fish and frogs share neural circuits responsible for a diversity of social behavior, from flashy mating displays to aggression and monogamy, that have existed for more than 450 million years, biologists have found. |
| Sex: It's a good thing, study of primroses shows Posted: 31 May 2012 11:55 AM PDT Way more than fun and games, sexual reproduction appears to give an evolutionary advantage, biologists have discovered. |
| Geoengineering for global warming: Increasing aerosols in atmosphere would make sky whiter Posted: 31 May 2012 08:26 AM PDT One idea for fighting global warming is to increase the amount of aerosols in the atmosphere, scattering incoming solar energy away from Earth's surface. But scientists theorize that this solar geoengineering could have a side effect of whitening the sky during the day. New research indicates that blocking 2 percent of the sun's light would make the sky three-to-five times brighter, as well as whiter. |
| Mystery of monarch butterfly migration takes new turn Posted: 31 May 2012 08:26 AM PDT A prevailing theory contends that eastern and western monarchs are genetically distinct, and that genetic mechanisms trigger their divergent migratory paths. An analysis by biologists, however, finds that the two groups are genetically mixed, suggesting environmental factors may be the key to the butterflies' choice of winter homes, and where they wind up in the spring. The distinction is important to help better understand their behavior, and to conserve the monarch flyways. |
| 'Like a jet through solid rock:' Volcanic arc fed by rapid fluid pulses Posted: 31 May 2012 07:19 AM PDT The depths of Earth are anything but peaceful: large quantities of liquids carve their way through the rock as fluids, causing magma to form. Scientists have now shown that the fluids flow a lot faster through solid rock than previously assumed. |
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