| |
| |
 | Posted by admin |
|
|
|
The clock is ticking inexorably toward doomsday even if we kill ourselves by poisoning the environment or overheating the planet. As you’ll see, there is one problem with the sun.
The Sun is slowly heating up, as it burns hydrogen in its core. In about five billion years our Sun begins to evolve into a red giant. Its cover foreign gas will expand, engulfing the Earth in the time it reaches its maximum brightness within seven billion years.
Click to continue »
|
| |
| Posted by admin |
|
|
|
The end of the accumulation of nuclear weapons during the Cold War means that the U.S. space agency has enough plutonium for future probes on distant missions, except for a few missions already planned, according to a new study by the National Academy of Sciences United States.
Deep space probes past Jupiter can not use solar energy because they are far from the sun. Thus, its energy supply depends on a particular type of plutonium, plutonium-238. This feeds the spacecraft with the energy released during its natural decay. But the plutonium-238 is not found in nature, is a byproduct of engineering arms.
Click to continue »
|
| |
| Posted by admin |
|
|
|
 Intelligent life on other planets may not be as improbable as many scientists believe, according to a new study that challenges a widespread anti-ET argument.
Many skeptics are limited to an idea called anthropic argument which holds that extraterrestrial intelligence should be very rare because the time needed for intelligent life to evolve, on average, much higher than the period in the existence of the star that allows that such a life to flourish.
But now astrobiologist Cirkovic Milan and his colleagues say they have found an error in this reasoning.
Click to continue »
|
| |
| Posted by admin |
|
|
|
Jose Luis Sanz. Author of 13 books about dinosaurs and lecturer in Spain, Argentina, USA, Portugal, France, China and Tunisia, Jose Luis Sanz presents these giants that both fascinate and form part of popular culture. And it does between references to the Simpson’s and the movies.
- When they began to lure the dinosaurs?
“In the late 50s with the film Beautiful ancient times, which is a monster who arrives in New York and starts eating people, like the dinosaurs that were fledged. I started looking around my bones home Scoria. I found, although a good collection of fossils. He was 10.
Click to continue »
|
| |
| Posted by admin |
|
|
|
The research may point to more effective therapeutic targets for deadly diseases by prions
Scientists at the Scripps Research Institute have determined for the first time that prions, infectious protein fragments devoid of DNA or RNA that can cause fatal neurodegenerative diseases, are capable of Darwinian evolution.
The study of Scripps Florida in Jupiter, USA, shows that prions may develop a large number of mutations at the level of protein and, through natural selection, these mutations can produce evolutionary adaptations such as resistance to drugs, a phenomenon that was known before only in bacteria and viruses. These findings also indicate that the normal prion protein, which occurs naturally in human cells, can become a focus of treatment more effective than their abnormal toxic relationship.
Click to continue »
|
 | |
| |
