ScienceDaily: Top Environment News |
- Oxygen to the core: Earth's core formed under more oxidizing conditions than previously proposed
- Virus caught in the act of infecting a cell
- A snapshot of pupfish evolution
- Lower nitrogen losses with perennial biofuel crops
- Giant tobacco plants that stay young forever
- Solving puzzles without a picture: New algorithm assembles chromosomes from next generation sequencing data
- Death on a nanometer scale: Study measures holes antibacterials create in cell walls
- Banded mongooses structure monosyllabic sounds in a similar way to humans
| Oxygen to the core: Earth's core formed under more oxidizing conditions than previously proposed Posted: 10 Jan 2013 01:13 PM PST Scientists have discovered that Earth's core formed under more oxidizing conditions than previously proposed. While scientists know that Earth accreted from some mixture of meteoritic material, there is no simple way to quantify precisely the proportions of these various materials. The new research defines how various materials may have been distributed and transported in the early solar system. |
| Virus caught in the act of infecting a cell Posted: 10 Jan 2013 12:26 PM PST The detailed changes in the structure of a virus as it infects an E. coli bacterium have been observed for the first time. |
| A snapshot of pupfish evolution Posted: 10 Jan 2013 11:20 AM PST One biologist has bred more than 3,000 hybrid fish in his time as a graduate student in evolution and ecology, a pursuit that has helped him create one of the most comprehensive snapshots of natural selection in the wild and demonstrated a key prediction in evolutionary biology. New research shows that San Salvadoran pupfish are evolving at an explosively faster rate than other pupfish. |
| Lower nitrogen losses with perennial biofuel crops Posted: 10 Jan 2013 09:10 AM PST Perennial biofuel crops such as miscanthus, whose high yields have led them to be considered an eventual alternative to corn in producing ethanol, are now shown to have another beneficial characteristic -- the ability to reduce the escape of nitrogen in the environment. In a 4-year study that compared miscanthus, switchgrass, and mixed prairie species to typical corn-corn-soybean rotations, each of the perennial crops were highly efficient at reducing nitrogen losses, with miscanthus having the greatest yield. |
| Giant tobacco plants that stay young forever Posted: 10 Jan 2013 08:17 AM PST Tobacco plants bloom when they are just a few months old -- and then they die. Now, researchers have located a genetic switch which can keep the plants young for years and which permits unbounded growth. In short, an ideal source of biomass. |
| Posted: 10 Jan 2013 07:24 AM PST One of the most difficult problems in the field of genomics is assembling short "reads" of DNA into complete chromosomes. Now an interdisciplinary group of genome and computer scientists has solved this problem, creating an algorithm that can rapidly create "virtual chromosomes" with no prior information about how the genome is organized. |
| Death on a nanometer scale: Study measures holes antibacterials create in cell walls Posted: 10 Jan 2013 06:43 AM PST Researchers have created a biophysical model of the response of a Gram-positive bacterium to the formation of a hole in its cell wall, then used experimental measurements to validate the theory. |
| Banded mongooses structure monosyllabic sounds in a similar way to humans Posted: 10 Jan 2013 04:53 AM PST Animals are more eloquent than previously assumed. Even the monosyllabic call of the banded mongoose is structured and thus comparable with the vowel and consonant system of human speech. Behavioral biologists have thus become the first to demonstrate that animals communicate with even smaller sound units than syllables. |
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