ScienceDaily: Top Science News |
- Athletic frogs have faster-changing genomes
- Engineered stem cells seek out and kill HIV in living mice
- Excessive worrying may have co-evolved with intelligence
- First-ever model simulation of the structuring of the observable universe
- Listen up, parents: For toddlers (and chimps), the majority rules
- Under climate change, winners and losers on the coral reef
- Discovery of the Musket Ball Cluster, a system of colliding galaxy clusters
- Dusty disc of crushed comets around a nearby star caused by collisions with thousands of comets a day
- Do monkeys know what others need?
- Workings of nearby planetary system revealed
- Astronomer finds evidence for record-breaking nine planet system
- Artificial photosynthesis breakthrough: Fast molecular catalyzer
- 'Time machine' will study the early universe
| Athletic frogs have faster-changing genomes Posted: 12 Apr 2012 03:23 PM PDT Physically fit frogs have faster-changing genomes, says a new study of poison frogs. Stretches of DNA accumulate changes over time, but the rate at which those changes build up varies considerably between species, researchers say.  |
| Engineered stem cells seek out and kill HIV in living mice Posted: 12 Apr 2012 03:22 PM PDT Expanding on previous research providing proof-of-principal that human stem cells can be genetically engineered into HIV-fighting cells, a team of researchers have now demonstrated that these cells can actually attack HIV-infected cells in a living organism.  |
| Excessive worrying may have co-evolved with intelligence Posted: 12 Apr 2012 12:30 PM PDT Worrying may have evolved along with intelligence as a beneficial trait, according to scientists who found that high intelligence and worry both correlate with brain activity measured by the depletion of the nutrient choline in the subcortical white matter of the brain. According to the researchers, this suggests that intelligence may have co-evolved with worry in humans.  |
| First-ever model simulation of the structuring of the observable universe Posted: 12 Apr 2012 10:30 AM PDT Astronomers have performed the first-ever computer model simulation of the structuring of the entire observable universe, from the Big Bang to the present day. The simulation has made it possible to follow the evolution of 550 billion particles. This simulation, along with the two additional runs expected by late May 2012, will provide outstanding support for future projects dedicated to the observation and mapping of the universe. These simulations will shed light on the nature of dark energy and its effects on cosmic structure formation, and hence on the distribution of dark matter and galaxies in the universe.  |
| Listen up, parents: For toddlers (and chimps), the majority rules Posted: 12 Apr 2012 09:13 AM PDT A new study offers some news for parents: even toddlers have a tendency to follow the crowd. That sensitivity isn't unique to humans either; chimpanzees also appear more likely to pick up habits if "everyone else is doing it."  |
| Under climate change, winners and losers on the coral reef Posted: 12 Apr 2012 09:13 AM PDT As ocean temperatures rise, some species of corals are likely to succeed at the expense of others, according to a new report that details the first large-scale investigation of climate effects on corals.  |
| Discovery of the Musket Ball Cluster, a system of colliding galaxy clusters Posted: 12 Apr 2012 08:37 AM PDT Using a combination of powerful observatories in space and on the ground, astronomers have observed a violent collision between two galaxy clusters in which so-called normal matter has been wrenched apart from dark matter through a violent collision between two galaxy clusters.  |
| Posted: 12 Apr 2012 07:57 AM PDT Astronomers have studied a ring of dust around the nearby star Fomalhaut and have deduced that it is created by the collision of thousands of comets every day.  |
| Do monkeys know what others need? Posted: 12 Apr 2012 07:55 AM PDT If you have seen a child just eat an entire ice-cream, and she begs you to buy her one, what will your reaction be? Researchers asked if monkeys understand the physical needs of others. In order to provide help or share food, it would be useful for them to know what others want or need.  |
| Workings of nearby planetary system revealed Posted: 12 Apr 2012 07:55 AM PDT A new observatory still under construction has given astronomers a major breakthrough in understanding a nearby planetary system and provided valuable clues about how such systems form and evolve. Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have discovered that planets orbiting the star Fomalhaut must be much smaller than originally thought. This is the first published science result from ALMA in its first period of open observations for astronomers worldwide.  |
| Astronomer finds evidence for record-breaking nine planet system Posted: 12 Apr 2012 07:55 AM PDT The planetary system around the star named HD 10180 may have more planets in its orbits than our own solar system. Located 130 light years away, the star is not within reach of foreseeable human space travel, but in astronomical distances, it is still considered to be in the solar neighborhood.  |
| Artificial photosynthesis breakthrough: Fast molecular catalyzer Posted: 12 Apr 2012 07:54 AM PDT Researchers have constructed a molecular catalyzer that can oxidize water to oxygen very rapidly. In fact, these scientists have managed to reach speeds approximating those of natural photosynthesis. The speed with which natural photosynthesis occurs is about 100 to 400 turnovers per seconds. Scientists have now reached over 300 turnovers per seconds with their artificial photosynthesis. The research findings play a critical role for the future use of solar energy and other renewable energy sources.  |
| 'Time machine' will study the early universe Posted: 11 Apr 2012 01:16 PM PDT A new scientific instrument, a "time machine" of sorts, built by astronomers, will study the earliest galaxies in the universe, which could never be studied before.  |
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