Researchers have found that the severity of ranavirosis, a devastating disease that kills thousands of frogs each year, increases in the presence of exotic fish. The use of garden chemicals was also associated with increased severity of the disease. 

Modified "good" cholesterol (HDL) and the activation of specific genes are causes of damage to the vascular system in chronic renal disease. A new project specifically examined the effect of cyanate, a decomposition product of urea, on the functioning of the vascular system.
The issue is important because the average age of the general population is increasing and with it the number of patients with chronic renal disease. Their mortality increases sharply in particular as a result of secondary cardiovascular disease. To date, however, little is known about how these sequelae occur.

Though ocean acidification and corals have been a concern, not all coral reefs are at risk. Instead, some thrive as they have absorbed atmospheric carbon dioxide (CO₂) released by the burning of fossil fuels.

In ocean acidification, the CO₂ reacts with water molecules, lowering ocean pH (making it more acidic), and that process also removes carbonate, an essential ingredient needed by corals and other organisms to build their skeletons and shells.

World Oceans Day today has meant new questions about ocean acidification, which threatens coral reef ecosystems worldwide - but not all reefs. 

 The Newborn Tory S2210 is the industry's most advanced, life-like newborn patient simulator, according to manufacturer Gaumard Scientific Company.

Fully tetherless and wireless, Newborn Tory enables health care professionals to easily administer and monitor simulated care as they transition from the delivery room to the operating room, the nursery or the NICU, while training for a large number of programmable scenarios. Tory integrates seamlessly with Gaumard's Victoria Birthing Simulator via a wireless link, allowing healthcare providers to first tend to labor and delivery and then stabilize or treat the newborn.

Newborn Tory's features include: 

Lifelike appearance, weight and size

What if your doctor told you that your weight is somewhere between 100 and 400 lbs.? With any ordinary scale every patient can do better at home. Yet, one patient can't: the Milky Way. Even though today we peer deeper into space than ever before, our home galaxy's weight is still unknown to about a factor of four. Researchers at Columbia University's Astronomy Department have now developed a new method to give the Milky Way a more precise physical checkup.

A close-up of Comet 67P/Churyumov-Gerasimenko by NASA's ultraviolet instrument surprised scientists by revealing that electrons close to the comet's surface -- not photons from the Sun as had been believed -- cause the rapid breakup of water and carbon dioxide molecules spewing from the surface.