Fossilized bones discovered in Texas from a flying reptile that died 89 million years ago may be the earliest occurrence in the world of the prehistoric creature known as Pteranodon.
Previously, Pteranodon bones have been found in Kansas, South …
In studies conducted on the fruit fly, researchers at IRB Barcelona headed by ICREA Professor Marco Milán have revealed that organs have the molecular mechanisms to control their proportions. In this process the protein p53 plays a crucial role. Th…
If an impact from space debris was a factor in the loss of the space shuttle Columbia, NASA had been given ample warning. A report published in 1997 predicted a scenario that has disturbing parallels with what may have befallen the spacecraft. Written by an expert panel convened by the US National Research Council, Protecting the Space Shuttle from Meteoroids and Orbital Debris, warns that debris impacts that penetrate the leading edge or underside of a shuttle wing or fuselage might not be immediately critical or detectable.