Cells have a remarkable housekeeping system: Proteins that are no longer needed, defective, or potentially harmful are labeled with a molecular "tag" and dismantled in the cellular recycling machinery ...

Micro-organisms constitute a very antique group of living organisms which appeared on the Earth’s surface almost 3000 million ...

How would you define a snack? People around the world eat many different foods as snacks, from potato fries to grubs and beetles. Would you consider eating these? Why do you think there are so many ...