Scientists are still investigating the nature of the mysterious rock, which created a hole in the roof - and interior damage - in a house in Sri Lanka.
New research by scientists studying environmental damage from the 2010 Deepwater Horizon oil spill explains why crude oil causes heart failure in fish.
Neutrophils are a type of white blood cell. They defend your body against harmful bacteria, by actually ingesting the bacteria ... apparently, after a bit of a chase.
Thousands are being evacuated on densely populated island of Java. Eruption took place 90 minutes after alert status for volcano was raised to highest level.