Prion's infectious secret

Prion's infectious secret

Researchers have known for decades that certain neurodegenerative diseases, such as mad cow disease or its human equivalent, Cruetzfeldt-Jakob disease, result from a kind of infectious protein called…
Species thrive due to sexual dimorphism

Species thrive due to sexual dimorphism

The presence of ecologically distinct males and females greatly increases a species' niche, say researchers. Some Caribbean lizards' strong sexual dimorphism allows them to colonize much larger…
Pyroclastic activity on Mars

Pyroclastic activity on Mars

A plateau on Mars known as Home Plate shows evidence of long-past explosive volcanic activity, say scientists on NASA's Mars Exploration Rover mission. And data collected during the rover Spirit's…
Do mens' sexual behaviors adapt to competition?

Do mens' sexual behaviors adapt to competition?

Call it sperm competition. According to a study appearing in Current Directions in Psychological Science, sexual characteristics exhibited by human males indicate that men have evolved to deliver…
Biosensor sniffs out explosives

Biosensor sniffs out explosives

Temple University School of Medicine researchers have developed a new biosensor that sniffs out explosives and could one day be used to detect landmines and deadly agents, such as sarin gas. To…
Tomb of King Herod discovered

Tomb of King Herod discovered

The long search for Herod the Great's tomb has ended with the exposure of the remains of his grave, sarcophagus and mausoleum on Mount Herodium's northeastern slope, Prof. Ehud Netzer of the Hebrew…
Wildfire emissions monitored from space

Wildfire emissions monitored from space

Using data from the SCIAMACHY instrument aboard ESA's environmental satellite Envisat, scientists have determined that the carbon monoxide hovering over Australia during the wildfire season largely…