How Do Scientists Know a Volcano Is About to Erupt?

Mount Merapi in Indonesia is expected to erupt at any moment, and Indonesian government officials have begun to evacuate the people living in villages near the volcano. The volatile mountain's last eruption was in 2006, and two people were killed when a plume of scorching gas, rocks and volcanic ash spewed down its slopes, according to the NASA Earth Observatory.

Coffee’s Mysterious Benefits Mount

From lowered cancer risks to a sharper memory, more studies are showing that coffee is good for you - but why? Regular coffee drinkers have a 39 percent decreased risk of head and neck cancer, according to a new study published in the journal Cancer Epidemiology, Biomarkers & Prevention. Those who drank an estimated four or more cups a day had significantly fewer cancers of the mouth and throat than non coffee drinkers, the study found. Scientists are still trying to determine exactly what it is about coffee that gives it its disease-fighting properties, but recent research is getting closer to unlocking the mysterious power behind the energizing brew.