If you live in a big city, you’ve probably become desensitized to seeing strange things. There’s nothing abnormal about passing a nun riding a bicycle or a man juggling glass bottles in the middle of ...

Evolution is the process of heritable change in populations of organisms over multiple generations. Evolutionary biology is the study of this process, which can occur through mechanisms including ...

Virus entry into animal cells is initiated by attachment to receptors and is followed by important conformational changes of viral proteins, penetration through (non-enveloped viruses) or fusion with ...