Scientists at the University of Missouri-St. Louis used DNA sequences from feather lice to study how island populations of their host, the Galápagos Hawk might have colonized the Galápagos islands,…

New York City’s infant mortality rate – widely regarded as a barometer of a population’s general health – fell slightly in 2006, the Health Department reported today. The rate in 2006 was 5.9 infant…

If one spouse exercises, quits smoking, stops drinking alcohol, receives a flu shot, or undergoes a cholesterol screening, the other spouse is more likely to do the same, according to a new study in…

Dark matter is believed to exist in the form of tiny particles that do not interact with light. Because they don’t emit or reflect electromagnetic radiation the way atomic, or baryonic, matter does,…

Discovered by Sir John Herschel in 1834, NGC 3603 is known to harbour a blue supergiant star called Sher 25, believed to be on the verge of exploding as a supernova. It is often known as the Milky…

Lower muscle mass and an increase in body fat are common consequences of growing older. While exercise is a proven way to prevent the loss of muscle mass, a new study led by McMaster researcher Dr.…

We all know about the advanced machines of the ancient Greeks, like the water pumps and the steam engines devised by their greatest minds, but what is less known is how those with little theoretical…

If space travelers ever visit Saturn's largest moon, they will find a tropical world where temperatures plunge to minus 274 degrees Fahrenheit, methane rains from the sky and dunes of ice or tar…

Scientists have made an important advance in understanding the genetic processes that give flowers, leaves and plants their bright colours. The knowledge could lead to a range of benefits, including…

The gender ratio in math science and engineering is approximately 3 men to every 1 woman, say Stanford psychologists Mary Murphy and Claude Steele, and situational cues, like being outnumbered, may…