The number of large-diameter trees that Yosemite National Park is famous far are on the decline, and warmer temperatures appear to be the culprit.

Their number have declined 24 percent in the park between the 1930s and 1990s. Scientists from the U.S. Geological Survey and University of Washington compared the earliest records of large-diameter trees densities from 1932 to the most recent records from 1988.

Professor Wei Sha from Queen’s University Belfast’s School of Planning, Architecture and Civil Engineering is concerned with the combat safety of vehicles that use titanium alloys.

Obviously the best way to remain safe is to actually not be at war but since bullets are flying and  terrorists are blowing themselves up, he has examined the damage tolerance of the popular material titanium.   The UK military based in Afghanistan currently use land rovers which have titanium alloys.   It is the first research of its kind to reveal the reasons behind the deformation and damage of titanium alloys under strong impact or fast applied force.

A new analysis of the remains of a Tyrannosaurus rex (T. rex) that roamed Earth 68 million years ago has confirmed traces of protein from blood and bone, tendons, or cartilage.

The findings published in the Journal of Proteome Research is the latest dataset in an ongoing controversy over which biochemical remnants can be detected in the dino.

Scientists in New York and North Carolina say they have assembled the first functioning prototype of an artificial Golgi organelle, a key structure inside cells which helps process and package hormones, enzymes, and other substances that allow the body to function normally.

They say their 'lab-on-a-chip' device could lead to a faster and safer method for producing heparin, the widely used anticoagulant or blood thinner, the researchers note. The study is published in the Journal of the American Chemical Society. 

The Golgi organelle is named for Camillo Golgi, the Italian scientist and Nobel Prize winner who discovered the structure in 1898.

Striking differences in the risk factors for developing heart failure (HF) and patient prognosis exist between men and women, according to a review article published in the August 4, 2009, issue of the Journal of the American College of Cardiology.
 
Men and women may also respond differently to treatment, raising concerns about whether current practices provide the best care and reinforcing the urgency for sex-specific clinical trials for heart failure. 

Genetic disease such as leukemia are a big target in 21st century science thanks to advancements in our understanding of how the body works.  

Some of our treatments, like chemotherapy, are rather brute force in their solution.   Now scientists from the Université de Montréal and McGill University say they have re-engineered a human enzyme, a protein that accelerates chemical reactions within the human body, to become highly resistant to harmful agents like chemotherapy.